442672761 has 4 divisors (see below), whose sum is σ = 590230352. Its totient is φ = 295115172.

The previous prime is 442672723. The next prime is 442672807. The reversal of 442672761 is 167276244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 442672761 - 2⁹ = 442672249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442672261) 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, 73778791 + ... + 73778796.

It is an arithmetic number, because the mean of its divisors is an integer number (147557588).

Almost surely, 2^442672761 is an apocalyptic number.

It is an amenable number.

442672761 is a deficient number, since it is larger than the sum of its proper divisors (147557591).

442672761 is a wasteful number, since it uses less digits than its factorization.

442672761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147557590.

The product of its digits is 112896, while the sum is 39.

The square root of 442672761 is about 21039.7899466701. The cubic root of 442672761 is about 762.1274423283.

The spelling of 442672761 in words is "four hundred forty-two million, six hundred seventy-two thousand, seven hundred sixty-one".