157144442 has 32 divisors (see below), whose sum is σ = 294223104. Its totient is φ = 61286400.

The previous prime is 157144387. The next prime is 157144451. The reversal of 157144442 is 244441751.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 157144399 and 157144408.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6842 + ... + 19002.

It is an arithmetic number, because the mean of its divisors is an integer number (9194472).

Almost surely, 2^157144442 is an apocalyptic number.

157144442 is a deficient number, since it is larger than the sum of its proper divisors (137078662).

157144442 is a wasteful number, since it uses less digits than its factorization.

157144442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12254.

The product of its digits is 17920, while the sum is 32.

The square root of 157144442 is about 12535.7266243326. The cubic root of 157144442 is about 539.6344599740.

The spelling of 157144442 in words is "one hundred fifty-seven million, one hundred forty-four thousand, four hundred forty-two".