157294642 has 8 divisors (see below), whose sum is σ = 249820956. Its totient is φ = 74020992.

The previous prime is 157294603. The next prime is 157294663. The reversal of 157294642 is 246492751.

It can be written as a sum of positive squares in 2 ways, for example, as 157226521 + 68121 = 12539^2 + 261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 157294595 and 157294604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2313123 + ... + 2313190.

Almost surely, 2^157294642 is an apocalyptic number.

157294642 is a deficient number, since it is larger than the sum of its proper divisors (92526314).

157294642 is a wasteful number, since it uses less digits than its factorization.

157294642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626332.

The product of its digits is 120960, while the sum is 40.

The square root of 157294642 is about 12541.7160707776. The cubic root of 157294642 is about 539.8063343014.

The spelling of 157294642 in words is "one hundred fifty-seven million, two hundred ninety-four thousand, six hundred forty-two".