442032123 has 24 divisors (see below), whose sum is σ = 657402928. Its totient is φ = 262620288.

The previous prime is 442032109. The next prime is 442032163. The reversal of 442032123 is 321230244.

It is not a de Polignac number, because 442032123 - 2¹³ = 442023931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442032123.

It is not an unprimeable number, because it can be changed into a prime (442032103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26061 + ... + 39537.

Almost surely, 2^442032123 is an apocalyptic number.

442032123 is a deficient number, since it is larger than the sum of its proper divisors (215370805).

442032123 is a wasteful number, since it uses less digits than its factorization.

442032123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13551 (or 13522 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 442032123 is about 21024.5599953959. The cubic root of 442032123 is about 761.7596134153.

Adding to 442032123 its reverse (321230244), we get a palindrome (763262367).

The spelling of 442032123 in words is "four hundred forty-two million, thirty-two thousand, one hundred twenty-three".