442731943 has 4 divisors (see below), whose sum is σ = 442905408. Its totient is φ = 442558480.

The previous prime is 442731941. The next prime is 442731967. The reversal of 442731943 is 349137244.

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

It is a cyclic number.

It is not a de Polignac number, because 442731943 - 2¹ = 442731941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442731941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82846 + ... + 88027.

It is an arithmetic number, because the mean of its divisors is an integer number (110726352).

Almost surely, 2^442731943 is an apocalyptic number.

442731943 is a deficient number, since it is larger than the sum of its proper divisors (173465).

442731943 is a wasteful number, since it uses less digits than its factorization.

442731943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173464.

The product of its digits is 72576, while the sum is 37.

The square root of 442731943 is about 21041.1963300569. The cubic root of 442731943 is about 762.1614043731.

The spelling of 442731943 in words is "four hundred forty-two million, seven hundred thirty-one thousand, nine hundred forty-three".