158139472 has 20 divisors (see below), whose sum is σ = 309840660. Its totient is φ = 78180608.

The previous prime is 158139469. The next prime is 158139479. The reversal of 158139472 is 274931851.

It can be written as a sum of positive squares in 2 ways, for example, as 75620416 + 82519056 = 8696^2 + 9084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158139479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54103 + ... + 56950.

It is an arithmetic number, because the mean of its divisors is an integer number (15492033).

Almost surely, 2^158139472 is an apocalyptic number.

It is an amenable number.

158139472 is a deficient number, since it is larger than the sum of its proper divisors (151701188).

158139472 is a wasteful number, since it uses less digits than its factorization.

158139472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111150 (or 111144 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 158139472 is about 12575.3517644637. The cubic root of 158139472 is about 540.7710430266.

The spelling of 158139472 in words is "one hundred fifty-eight million, one hundred thirty-nine thousand, four hundred seventy-two".