442538052 has 36 divisors (see below), whose sum is σ = 1127076048. Its totient is φ = 134029200.

The previous prime is 442538039. The next prime is 442538059. The reversal of 442538052 is 250835244.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (442538059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240777 + ... + 242607.

It is an arithmetic number, because the mean of its divisors is an integer number (31307668).

Almost surely, 2^442538052 is an apocalyptic number.

It is an amenable number.

442538052 is an abundant number, since it is smaller than the sum of its proper divisors (684537996).

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

442538052 is a wasteful number, since it uses less digits than its factorization.

442538052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680 (or 1847 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 442538052 is about 21036.5884116223. The cubic root of 442538052 is about 762.0501272471.

Multiplying 442538052 by its sum of digits (33), we get a square (14603755716 = 120846²).

442538052 divided by its sum of digits (33) gives a square (13410244 = 3662²).

The spelling of 442538052 in words is "four hundred forty-two million, five hundred thirty-eight thousand, fifty-two".