442937138 has 32 divisors (see below), whose sum is σ = 786100224. Its totient is φ = 183218112.

The previous prime is 442937119. The next prime is 442937141. The reversal of 442937138 is 831739244.

It is a junction number, because it is equal to n+sod(n) for n = 442937095 and 442937104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62420 + ... + 69152.

It is an arithmetic number, because the mean of its divisors is an integer number (24565632).

Almost surely, 2^442937138 is an apocalyptic number.

442937138 is a deficient number, since it is larger than the sum of its proper divisors (343163086).

442937138 is a wasteful number, since it uses less digits than its factorization.

442937138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906.

The product of its digits is 145152, while the sum is 41.

The square root of 442937138 is about 21046.0717949930. The cubic root of 442937138 is about 762.2791336649.

The spelling of 442937138 in words is "four hundred forty-two million, nine hundred thirty-seven thousand, one hundred thirty-eight".