442457042 has 4 divisors (see below), whose sum is σ = 663685566. Its totient is φ = 221228520.

The previous prime is 442457023. The next prime is 442457077. The reversal of 442457042 is 240754244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 427703761 + 14753281 = 20681^2 + 3841^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110614259 + ... + 110614262.

Almost surely, 2^442457042 is an apocalyptic number.

442457042 is a deficient number, since it is larger than the sum of its proper divisors (221228524).

442457042 is a wasteful number, since it uses less digits than its factorization.

442457042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221228523.

The product of its (nonzero) digits is 35840, while the sum is 32.

The square root of 442457042 is about 21034.6628687032. The cubic root of 442457042 is about 762.0036246937.

The spelling of 442457042 in words is "four hundred forty-two million, four hundred fifty-seven thousand, forty-two".