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230115042 = 232194116411
BaseRepresentation
bin11011011011101…
…00011011100010
3121001000001111100
431231310123202
5432402140132
634500055230
75462642223
oct1555643342
9531001440
10230115042
11108991923
1265094516
133889c761
14227c124a
151530737c
hexdb746e2

230115042 has 48 divisors (see below), whose sum is σ = 537657120. Its totient is φ = 70891200.

The previous prime is 230115007. The next prime is 230115049. The reversal of 230115042 is 240511032.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (230115049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5817 + ... + 22227.

It is an arithmetic number, because the mean of its divisors is an integer number (11201190).

Almost surely, 2230115042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230115042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268828560).

230115042 is an abundant number, since it is smaller than the sum of its proper divisors (307542078).

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

230115042 is a wasteful number, since it uses less digits than its factorization.

230115042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16479 (or 16476 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 230115042 is about 15169.5432363667. The cubic root of 230115042 is about 612.7947032182.

Adding to 230115042 its reverse (240511032), we get a palindrome (470626074).

The spelling of 230115042 in words is "two hundred thirty million, one hundred fifteen thousand, forty-two".

Divisors: 1 2 3 6 9 18 19 38 41 57 82 114 123 171 246 342 369 738 779 1558 2337 4674 7011 14022 16411 32822 49233 98466 147699 295398 311809 623618 672851 935427 1345702 1870854 2018553 2806281 4037106 5612562 6055659 12111318 12784169 25568338 38352507 76705014 115057521 230115042