157139434 has 16 divisors (see below), whose sum is σ = 243657216. Its totient is φ = 75927600.

The previous prime is 157139419. The next prime is 157139441. The reversal of 157139434 is 434931751.

It is a junction number, because it is equal to n+sod(n) for n = 157139393 and 157139402.

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, 58644 + ... + 61264.

It is an arithmetic number, because the mean of its divisors is an integer number (15228576).

Almost surely, 2^157139434 is an apocalyptic number.

157139434 is a deficient number, since it is larger than the sum of its proper divisors (86517782).

157139434 is a wasteful number, since it uses less digits than its factorization.

157139434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621.

The product of its digits is 45360, while the sum is 37.

The square root of 157139434 is about 12535.5268736499. The cubic root of 157139434 is about 539.6287274177.

The spelling of 157139434 in words is "one hundred fifty-seven million, one hundred thirty-nine thousand, four hundred thirty-four".