42644592 has 120 divisors (see below), whose sum is σ = 126741888. Its totient is φ = 13363200.

The previous prime is 42644579. The next prime is 42644593. The reversal of 42644592 is 29544624.

42644592 is a `hidden beast` number, since 4 + 2 + 64 + 4 + 592 = 666.

It is a super-2 number, since 2×42644592² = 3637122453692928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42644593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182908 + ... + 183140.

Almost surely, 2^42644592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42644592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63370944).

42644592 is an abundant number, since it is smaller than the sum of its proper divisors (84097296).

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

42644592 is a wasteful number, since it uses less digits than its factorization.

42644592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 310 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 42644592 is about 6530.2826891338. The cubic root of 42644592 is about 349.3719130064.

The spelling of 42644592 in words is "forty-two million, six hundred forty-four thousand, five hundred ninety-two".