157474239 has 16 divisors (see below), whose sum is σ = 227775072. Its totient is φ = 96196608.

The previous prime is 157474217. The next prime is 157474241. The reversal of 157474239 is 932474751.

It is not a de Polignac number, because 157474239 - 2⁹ = 157473727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157474239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157474279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9394 + ... + 20079.

It is an arithmetic number, because the mean of its divisors is an integer number (14235942).

Almost surely, 2^157474239 is an apocalyptic number.

157474239 is a deficient number, since it is larger than the sum of its proper divisors (70300833).

157474239 is a wasteful number, since it uses less digits than its factorization.

157474239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29626.

The product of its digits is 211680, while the sum is 42.

The square root of 157474239 is about 12548.8740132332. The cubic root of 157474239 is about 540.0117041359.

The spelling of 157474239 in words is "one hundred fifty-seven million, four hundred seventy-four thousand, two hundred thirty-nine".