158145729 has 16 divisors (see below), whose sum is σ = 249294720. Its totient is φ = 87252480.

The previous prime is 158145707. The next prime is 158145749. The reversal of 158145729 is 927541851.

It is not a de Polignac number, because 158145729 - 2⁸ = 158145473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158145749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129232 + ... + 130449.

It is an arithmetic number, because the mean of its divisors is an integer number (15580920).

Almost surely, 2^158145729 is an apocalyptic number.

It is an amenable number.

158145729 is a deficient number, since it is larger than the sum of its proper divisors (91148991).

158145729 is a wasteful number, since it uses less digits than its factorization.

158145729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259720.

The product of its digits is 100800, while the sum is 42.

The square root of 158145729 is about 12575.6005423200. The cubic root of 158145729 is about 540.7781750428.

The spelling of 158145729 in words is "one hundred fifty-eight million, one hundred forty-five thousand, seven hundred twenty-nine".