442423242 has 16 divisors (see below), whose sum is σ = 983162880. Its totient is φ = 147474396.

The previous prime is 442423237. The next prime is 442423253. The reversal of 442423242 is 242324244.

442423242 is a `hidden beast` number, since 4 + 424 + 232 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 4096458 + ... + 4096565.

It is an arithmetic number, because the mean of its divisors is an integer number (61447680).

Almost surely, 2^442423242 is an apocalyptic number.

442423242 is an abundant number, since it is smaller than the sum of its proper divisors (540739638).

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

442423242 is a wasteful number, since it uses less digits than its factorization.

442423242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8193034 (or 8193028 counting only the distinct ones).

The product of its digits is 12288, while the sum is 27.

The square root of 442423242 is about 21033.8594176152. The cubic root of 442423242 is about 761.9842206417.

Adding to 442423242 its reverse (242324244), we get a palindrome (684747486).

The spelling of 442423242 in words is "four hundred forty-two million, four hundred twenty-three thousand, two hundred forty-two".