158442842 has 4 divisors (see below), whose sum is σ = 237664266. Its totient is φ = 79221420.

The previous prime is 158442833. The next prime is 158442853. The reversal of 158442842 is 248244851.

158442842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 124791241 + 33651601 = 11171^2 + 5801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158442796 and 158442805.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39610709 + ... + 39610712.

Almost surely, 2^158442842 is an apocalyptic number.

158442842 is a deficient number, since it is larger than the sum of its proper divisors (79221424).

158442842 is an equidigital number, since it uses as much as digits as its factorization.

158442842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79221423.

The product of its digits is 81920, while the sum is 38.

The square root of 158442842 is about 12587.4080731499. The cubic root of 158442842 is about 541.1166217652.

The spelling of 158442842 in words is "one hundred fifty-eight million, four hundred forty-two thousand, eight hundred forty-two".