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142131030 = 23523297103
BaseRepresentation
bin10000111100010…
…11111101010110
3100220110000010020
420132023331112
5242341143110
622034210010
73344044116
oct1036137526
9326400106
10142131030
1173258168
123b723906
13235a5302
1414c3b046
15c727d70
hex878bf56

142131030 has 64 divisors (see below), whose sum is σ = 368271360. Its totient is φ = 34998656.

The previous prime is 142130993. The next prime is 142131047. The reversal of 142131030 is 30131241.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16459 + ... + 23561.

It is an arithmetic number, because the mean of its divisors is an integer number (5754240).

Almost surely, 2142131030 is an apocalyptic number.

142131030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142131030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184135680).

142131030 is an abundant number, since it is smaller than the sum of its proper divisors (226140330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142131030 is a wasteful number, since it uses less digits than its factorization.

142131030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7165.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 142131030 is about 11921.8719167755. The cubic root of 142131030 is about 521.8707640901.

Adding to 142131030 its reverse (30131241), we get a palindrome (172262271).

The spelling of 142131030 in words is "one hundred forty-two million, one hundred thirty-one thousand, thirty".

Divisors: 1 2 3 5 6 10 15 23 29 30 46 58 69 87 115 138 145 174 230 290 345 435 667 690 870 1334 2001 3335 4002 6670 7103 10005 14206 20010 21309 35515 42618 71030 106545 163369 205987 213090 326738 411974 490107 617961 816845 980214 1029935 1235922 1633690 2059870 2450535 3089805 4737701 4901070 6179610 9475402 14213103 23688505 28426206 47377010 71065515 142131030