442001052 has 18 divisors (see below), whose sum is σ = 1117280528. Its totient is φ = 147333672.

The previous prime is 442001029. The next prime is 442001083. The reversal of 442001052 is 250100244.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6138868 + ... + 6138939.

Almost surely, 2^442001052 is an apocalyptic number.

It is an amenable number.

442001052 is an abundant number, since it is smaller than the sum of its proper divisors (675279476).

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

442001052 is a wasteful number, since it uses less digits than its factorization.

442001052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12277817 (or 12277812 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 442001052 is about 21023.8210608823. The cubic root of 442001052 is about 761.7417646465.

Adding to 442001052 its reverse (250100244), we get a palindrome (692101296).

The spelling of 442001052 in words is "four hundred forty-two million, one thousand, fifty-two".