442432420 has 12 divisors (see below), whose sum is σ = 929108124. Its totient is φ = 176972960.

The previous prime is 442432411. The next prime is 442432427. The reversal of 442432420 is 24234244.

It can be written as a sum of positive squares in 2 ways, for example, as 128504896 + 313927524 = 11336^2 + 17718^2 .

It is not an unprimeable number, because it can be changed into a prime (442432427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11060791 + ... + 11060830.

It is an arithmetic number, because the mean of its divisors is an integer number (77425677).

Almost surely, 2^442432420 is an apocalyptic number.

It is an amenable number.

442432420 is an abundant number, since it is smaller than the sum of its proper divisors (486675704).

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

442432420 is a wasteful number, since it uses less digits than its factorization.

442432420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22121630 (or 22121628 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 442432420 is about 21034.0775885229. The cubic root of 442432420 is about 761.9894896859.

Adding to 442432420 its reverse (24234244), we get a palindrome (466666664).

The spelling of 442432420 in words is "four hundred forty-two million, four hundred thirty-two thousand, four hundred twenty".