442724243 has 4 divisors (see below), whose sum is σ = 476779968. Its totient is φ = 408668520.

The previous prime is 442724239. The next prime is 442724257. The reversal of 442724243 is 342427244.

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

It is not a de Polignac number, because 442724243 - 2² = 442724239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442724213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17027843 + ... + 17027868.

It is an arithmetic number, because the mean of its divisors is an integer number (119194992).

Almost surely, 2^442724243 is an apocalyptic number.

442724243 is a deficient number, since it is larger than the sum of its proper divisors (34055725).

442724243 is a wasteful number, since it uses less digits than its factorization.

442724243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34055724.

The product of its digits is 43008, while the sum is 32.

The square root of 442724243 is about 21041.0133548743. The cubic root of 442724243 is about 762.1569858403.

The spelling of 442724243 in words is "four hundred forty-two million, seven hundred twenty-four thousand, two hundred forty-three".