442752540 has 48 divisors (see below), whose sum is σ = 1279703040. Its totient is φ = 114258240.

The previous prime is 442752533. The next prime is 442752559. The reversal of 442752540 is 45257244.

It is a congruent number.

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, 117160 + ... + 120879.

It is an arithmetic number, because the mean of its divisors is an integer number (26660480).

Almost surely, 2^442752540 is an apocalyptic number.

It is an amenable number.

442752540 is an abundant number, since it is smaller than the sum of its proper divisors (836950500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442752540 is a wasteful number, since it uses less digits than its factorization.

442752540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238082 (or 238080 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 33.

The square root of 442752540 is about 21041.6857689682. The cubic root of 442752540 is about 762.1732234096.

The spelling of 442752540 in words is "four hundred forty-two million, seven hundred fifty-two thousand, five hundred forty".