42644524 has 24 divisors (see below), whose sum is σ = 80706528. Its totient is φ = 19599360.

The previous prime is 42644521. The next prime is 42644527. The reversal of 42644524 is 42544624.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42644521) and next prime (42644527).

It is not an unprimeable number, because it can be changed into a prime (42644521) 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 7 ways as a sum of consecutive naturals, for example, 11769 + ... + 14959.

It is an arithmetic number, because the mean of its divisors is an integer number (3362772).

Almost surely, 2^42644524 is an apocalyptic number.

It is an amenable number.

42644524 is a deficient number, since it is larger than the sum of its proper divisors (38062004).

42644524 is a wasteful number, since it uses less digits than its factorization.

42644524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465 (or 3463 counting only the distinct ones).

The product of its digits is 30720, while the sum is 31.

The square root of 42644524 is about 6530.2774826189. The cubic root of 42644524 is about 349.3717273064.

The spelling of 42644524 in words is "forty-two million, six hundred forty-four thousand, five hundred twenty-four".