42440158 has 8 divisors (see below), whose sum is σ = 63853560. Its totient is φ = 21155640.

The previous prime is 42440149. The next prime is 42440161. The reversal of 42440158 is 85104424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42440158² = 3602334022129928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31393 + ... + 32716.

It is an arithmetic number, because the mean of its divisors is an integer number (7981695).

Almost surely, 2^42440158 is an apocalyptic number.

42440158 is a deficient number, since it is larger than the sum of its proper divisors (21413402).

42440158 is a wasteful number, since it uses less digits than its factorization.

42440158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64442.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 42440158 is about 6514.6111165595. The cubic root of 42440158 is about 348.8127335835.

The spelling of 42440158 in words is "forty-two million, four hundred forty thousand, one hundred fifty-eight".