157239130 has 32 divisors (see below), whose sum is σ = 297146880. Its totient is φ = 59828160.

The previous prime is 157239127. The next prime is 157239133. The reversal of 157239130 is 31932751.

It is an interprime number because it is at equal distance from previous prime (157239127) and next prime (157239133).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 157239092 and 157239101.

It is not an unprimeable number, because it can be changed into a prime (157239133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13992 + ... + 22588.

It is an arithmetic number, because the mean of its divisors is an integer number (9285840).

Almost surely, 2^157239130 is an apocalyptic number.

157239130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157239130 is a deficient number, since it is larger than the sum of its proper divisors (139907750).

157239130 is a wasteful number, since it uses less digits than its factorization.

157239130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8694.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 157239130 is about 12539.5027812111. The cubic root of 157239130 is about 539.7428244987.

The spelling of 157239130 in words is "one hundred fifty-seven million, two hundred thirty-nine thousand, one hundred thirty".