158232442 has 4 divisors (see below), whose sum is σ = 237348666. Its totient is φ = 79116220.

The previous prime is 158232419. The next prime is 158232467. The reversal of 158232442 is 244232851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 128845201 + 29387241 = 11351^2 + 5421^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39558109 + ... + 39558112.

Almost surely, 2^158232442 is an apocalyptic number.

158232442 is a deficient number, since it is larger than the sum of its proper divisors (79116224).

158232442 is an equidigital number, since it uses as much as digits as its factorization.

158232442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79116223.

The product of its digits is 15360, while the sum is 31.

The square root of 158232442 is about 12579.0477382034. The cubic root of 158232442 is about 540.8769951421.

The spelling of 158232442 in words is "one hundred fifty-eight million, two hundred thirty-two thousand, four hundred forty-two".