157117434 has 16 divisors (see below), whose sum is σ = 332719488. Its totient is φ = 49291712.

The previous prime is 157117397. The next prime is 157117459. The reversal of 157117434 is 434711751.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 157117395 and 157117404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770082 + ... + 770285.

It is an arithmetic number, because the mean of its divisors is an integer number (20794968).

Almost surely, 2^157117434 is an apocalyptic number.

157117434 is an abundant number, since it is smaller than the sum of its proper divisors (175602054).

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

157117434 is a wasteful number, since it uses less digits than its factorization.

157117434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540389.

The product of its digits is 11760, while the sum is 33.

The square root of 157117434 is about 12534.6493369380. The cubic root of 157117434 is about 539.6035430198.

The spelling of 157117434 in words is "one hundred fifty-seven million, one hundred seventeen thousand, four hundred thirty-four".