442440022 has 8 divisors (see below), whose sum is σ = 665094816. Its totient is φ = 220741752.

The previous prime is 442440017. The next prime is 442440041. The reversal of 442440022 is 220044244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 442439975 and 442440002.

It is a congruent number.

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, 237973 + ... + 239824.

It is an arithmetic number, because the mean of its divisors is an integer number (83136852).

Almost surely, 2^442440022 is an apocalyptic number.

442440022 is a deficient number, since it is larger than the sum of its proper divisors (222654794).

442440022 is a wasteful number, since it uses less digits than its factorization.

442440022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478262.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 442440022 is about 21034.2582945061. The cubic root of 442440022 is about 761.9938539011.

Adding to 442440022 its reverse (220044244), we get a palindrome (662484266).

The spelling of 442440022 in words is "four hundred forty-two million, four hundred forty thousand, twenty-two".