442100422 has 8 divisors (see below), whose sum is σ = 663243696. Its totient is φ = 221019192.

The previous prime is 442100381. The next prime is 442100441. The reversal of 442100422 is 224001244.

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

It is a self number, because there is not a number n which added to its sum of digits gives 442100422.

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, 12223 + ... + 32149.

It is an arithmetic number, because the mean of its divisors is an integer number (82905462).

Almost surely, 2^442100422 is an apocalyptic number.

442100422 is a deficient number, since it is larger than the sum of its proper divisors (221143274).

442100422 is a wasteful number, since it uses less digits than its factorization.

442100422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31022.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 442100422 is about 21026.1841997068. The cubic root of 442100422 is about 761.7988449083.

Adding to 442100422 its reverse (224001244), we get a palindrome (666101666).

The spelling of 442100422 in words is "four hundred forty-two million, one hundred thousand, four hundred twenty-two".