157933242 has 24 divisors (see below), whose sum is σ = 351438516. Its totient is φ = 51221376.

The previous prime is 157933241. The next prime is 157933253. The reversal of 157933242 is 242339751.

It can be written as a sum of positive squares in 2 ways, for example, as 126360081 + 31573161 = 11241^2 + 5619^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157933197 and 157933206.

It is not an unprimeable number, because it can be changed into a prime (157933241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117903 + ... + 119234.

Almost surely, 2^157933242 is an apocalyptic number.

157933242 is an abundant number, since it is smaller than the sum of its proper divisors (193505274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157933242 is a wasteful number, since it uses less digits than its factorization.

157933242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237182 (or 237179 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 157933242 is about 12567.1493187596. The cubic root of 157933242 is about 540.5358672350.

The spelling of 157933242 in words is "one hundred fifty-seven million, nine hundred thirty-three thousand, two hundred forty-two".