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142131039 = 31943103563
BaseRepresentation
bin10000111100010…
…11111101011111
3100220110000010120
420132023331133
5242341143124
622034210023
73344044131
oct1036137537
9326400116
10142131039
1173258176
123b723913
13235a530b
1414c3b051
15c727d79
hex878bf5f

142131039 has 32 divisors (see below), whose sum is σ = 206469120. Its totient is φ = 86673888.

The previous prime is 142130993. The next prime is 142131047. The reversal of 142131039 is 930131241.

It is not a de Polignac number, because 142131039 - 213 = 142122847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142131049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252172 + ... + 252734.

It is an arithmetic number, because the mean of its divisors is an integer number (6452160).

Almost surely, 2142131039 is an apocalyptic number.

142131039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

142131039 is a deficient number, since it is larger than the sum of its proper divisors (64338081).

142131039 is a wasteful number, since it uses less digits than its factorization.

142131039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 142131039 is about 11921.8722942330. The cubic root of 142131039 is about 521.8707751053.

The spelling of 142131039 in words is "one hundred forty-two million, one hundred thirty-one thousand, thirty-nine".

Divisors: 1 3 19 43 57 103 129 309 563 817 1689 1957 2451 4429 5871 10697 13287 24209 32091 57989 72627 84151 173967 252453 459971 1101791 1379913 2493527 3305373 7480581 47377013 142131039