442121244 has 24 divisors (see below), whose sum is σ = 1092300048. Its totient is φ = 138704640.

The previous prime is 442121237. The next prime is 442121257.

442121244 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×442121244² = 390942388792215072, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1083427 + ... + 1083834.

It is an arithmetic number, because the mean of its divisors is an integer number (45512502).

Almost surely, 2^442121244 is an apocalyptic number.

It is an amenable number.

442121244 is an abundant number, since it is smaller than the sum of its proper divisors (650178804).

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

442121244 is a wasteful number, since it uses less digits than its factorization.

442121244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167285 (or 2167283 counting only the distinct ones).

The product of its digits is 2048, while the sum is 24.

The square root of 442121244 is about 21026.6793384024. The cubic root of 442121244 is about 761.8108044283.

The spelling of 442121244 in words is "four hundred forty-two million, one hundred twenty-one thousand, two hundred forty-four".