157342347 has 6 divisors (see below), whose sum is σ = 227272292. Its totient is φ = 104894892.

The previous prime is 157342343. The next prime is 157342357. The reversal of 157342347 is 743243751.

157342347 is a `hidden beast` number, since 1 + 573 + 42 + 3 + 47 = 666.

It is not a de Polignac number, because 157342347 - 2² = 157342343 is a prime.

It is a super-2 number, since 2×157342347² = 49513228318936818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157342343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8741233 + ... + 8741250.

Almost surely, 2^157342347 is an apocalyptic number.

157342347 is a deficient number, since it is larger than the sum of its proper divisors (69929945).

157342347 is a wasteful number, since it uses less digits than its factorization.

157342347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17482489 (or 17482486 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 157342347 is about 12543.6177795722. The cubic root of 157342347 is about 539.8609003861.

It can be divided in two parts, 15734 and 2347, that added together give a palindrome (18081).

The spelling of 157342347 in words is "one hundred fifty-seven million, three hundred forty-two thousand, three hundred forty-seven".