442233420 has 72 divisors (see below), whose sum is σ = 1294524336. Its totient is φ = 112793472.

The previous prime is 442233419. The next prime is 442233439. The reversal of 442233420 is 24332244.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24774 + ... + 38706.

Almost surely, 2^442233420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442233420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647262168).

442233420 is an abundant number, since it is smaller than the sum of its proper divisors (852290916).

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

442233420 is a wasteful number, since it uses less digits than its factorization.

442233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13991 (or 13966 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 442233420 is about 21029.3466374968. The cubic root of 442233420 is about 761.8752284324.

Adding to 442233420 its reverse (24332244), we get a palindrome (466565664).

The spelling of 442233420 in words is "four hundred forty-two million, two hundred thirty-three thousand, four hundred twenty".