158242730 has 16 divisors (see below), whose sum is σ = 284985864. Its totient is φ = 63264000.

The previous prime is 158242727. The next prime is 158242759. The reversal of 158242730 is 37242851.

It can be written as a sum of positive squares in 4 ways, for example, as 128572921 + 29669809 = 11339^2 + 5447^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27374 + ... + 32646.

Almost surely, 2^158242730 is an apocalyptic number.

158242730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158242730 is a deficient number, since it is larger than the sum of its proper divisors (126743134).

158242730 is a wasteful number, since it uses less digits than its factorization.

158242730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 158242730 is about 12579.4566655321. The cubic root of 158242730 is about 540.8887171840. Note that the first 3 decimals are identical.

The spelling of 158242730 in words is "one hundred fifty-eight million, two hundred forty-two thousand, seven hundred thirty".