442221292 has 12 divisors (see below), whose sum is σ = 774068400. Its totient is φ = 221058896.

The previous prime is 442221277. The next prime is 442221301. The reversal of 442221292 is 292122244.

It is a self number, because there is not a number n which added to its sum of digits gives 442221292.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11358 + ... + 31834.

It is an arithmetic number, because the mean of its divisors is an integer number (64505700).

Almost surely, 2^442221292 is an apocalyptic number.

It is an amenable number.

442221292 is a deficient number, since it is larger than the sum of its proper divisors (331847108).

442221292 is a wasteful number, since it uses less digits than its factorization.

442221292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25880 (or 25878 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 442221292 is about 21029.0582765848. The cubic root of 442221292 is about 761.8682637038.

The spelling of 442221292 in words is "four hundred forty-two million, two hundred twenty-one thousand, two hundred ninety-two".