157139674 has 4 divisors (see below), whose sum is σ = 235709514. Its totient is φ = 78569836.

The previous prime is 157139641. The next prime is 157139681. The reversal of 157139674 is 476931751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476931751 = 59 ⋅8083589.

It can be written as a sum of positive squares in only one way, i.e., 153586449 + 3553225 = 12393^2 + 1885^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 157139674.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39284917 + ... + 39284920.

Almost surely, 2^157139674 is an apocalyptic number.

157139674 is a deficient number, since it is larger than the sum of its proper divisors (78569840).

157139674 is an equidigital number, since it uses as much as digits as its factorization.

157139674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78569839.

The product of its digits is 158760, while the sum is 43.

The square root of 157139674 is about 12535.5364464390. The cubic root of 157139674 is about 539.6290021436.

The spelling of 157139674 in words is "one hundred fifty-seven million, one hundred thirty-nine thousand, six hundred seventy-four".