640032124 has 12 divisors (see below), whose sum is σ = 1146104344. Its totient is φ = 312573744.

The previous prime is 640032101. The next prime is 640032143. The reversal of 640032124 is 421230046.

It is a happy number.

640032124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×640032124² = 819282239503902752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 640032095 and 640032104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1860387 + ... + 1860730.

Almost surely, 2^640032124 is an apocalyptic number.

It is an amenable number.

640032124 is a deficient number, since it is larger than the sum of its proper divisors (506072220).

640032124 is a wasteful number, since it uses less digits than its factorization.

640032124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721164 (or 3721162 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 640032124 is about 25298.8561796774. The cubic root of 640032124 is about 861.7882943257.

The spelling of 640032124 in words is "six hundred forty million, thirty-two thousand, one hundred twenty-four".