157242744 has 48 divisors (see below), whose sum is σ = 435778200. Its totient is φ = 51194304.

The previous prime is 157242737. The next prime is 157242773. The reversal of 157242744 is 447242751.

157242744 is a `hidden beast` number, since 1 + 572 + 42 + 7 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 157242699 and 157242708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22299 + ... + 28490.

Almost surely, 2^157242744 is an apocalyptic number.

It is an amenable number.

157242744 is an abundant number, since it is smaller than the sum of its proper divisors (278535456).

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

157242744 is a wasteful number, since it uses less digits than its factorization.

157242744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50844 (or 50837 counting only the distinct ones).

The product of its digits is 62720, while the sum is 36.

The square root of 157242744 is about 12539.6468849805. The cubic root of 157242744 is about 539.7469596348.

The spelling of 157242744 in words is "one hundred fifty-seven million, two hundred forty-two thousand, seven hundred forty-four".