442873575 has 36 divisors (see below), whose sum is σ = 822626168. Its totient is φ = 236196000.

The previous prime is 442873549. The next prime is 442873577. The reversal of 442873575 is 575378244.

442873575 is a `hidden beast` number, since 4 + 4 + 2 + 8 + 73 + 575 = 666.

It is not a de Polignac number, because 442873575 - 2¹⁸ = 442611431 is a prime.

It is a super-2 number, since 2×442873575² = 392274006866561250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442873575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442873577) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30376 + ... + 42525.

Almost surely, 2^442873575 is an apocalyptic number.

442873575 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

442873575 is a deficient number, since it is larger than the sum of its proper divisors (379752593).

442873575 is an equidigital number, since it uses as much as digits as its factorization.

442873575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72926 (or 72909 counting only the distinct ones).

The product of its digits is 940800, while the sum is 45.

The square root of 442873575 is about 21044.5616490342. The cubic root of 442873575 is about 762.2426686963.

The spelling of 442873575 in words is "four hundred forty-two million, eight hundred seventy-three thousand, five hundred seventy-five".