157342730 has 16 divisors (see below), whose sum is σ = 286138440. Its totient is φ = 62287872.

The previous prime is 157342711. The next prime is 157342739. The reversal of 157342730 is 37243751.

It can be written as a sum of positive squares in 4 ways, for example, as 150283081 + 7059649 = 12259^2 + 2657^2 .

It is not an unprimeable number, because it can be changed into a prime (157342739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80135 + ... + 82074.

Almost surely, 2^157342730 is an apocalyptic number.

157342730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157342730 is a deficient number, since it is larger than the sum of its proper divisors (128795710).

157342730 is a wasteful number, since it uses less digits than its factorization.

157342730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162313.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 157342730 is about 12543.6330462909. The cubic root of 157342730 is about 539.8613384258.

The spelling of 157342730 in words is "one hundred fifty-seven million, three hundred forty-two thousand, seven hundred thirty".