442751144 has 32 divisors (see below), whose sum is σ = 906517440. Its totient is φ = 201052800.

The previous prime is 442751137. The next prime is 442751161. The reversal of 442751144 is 441157244.

It is a self number, because there is not a number n which added to its sum of digits gives 442751144.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124349 + ... + 127859.

It is an arithmetic number, because the mean of its divisors is an integer number (28328670).

Almost surely, 2^442751144 is an apocalyptic number.

442751144 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

442751144 is an abundant number, since it is smaller than the sum of its proper divisors (463766296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442751144 is a wasteful number, since it uses less digits than its factorization.

442751144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961 (or 4957 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 442751144 is about 21041.6525966950. The cubic root of 442751144 is about 762.1724223640.

The spelling of 442751144 in words is "four hundred forty-two million, seven hundred fifty-one thousand, one hundred forty-four".