642251032 has 32 divisors (see below), whose sum is σ = 1260133200. Its totient is φ = 306543744.

The previous prime is 642251017. The next prime is 642251033. The reversal of 642251032 is 230152246.

642251032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 642250988 and 642251006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642251033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4782 + ... + 36157.

Almost surely, 2^642251032 is an apocalyptic number.

It is an amenable number.

642251032 is a deficient number, since it is larger than the sum of its proper divisors (617882168).

642251032 is a wasteful number, since it uses less digits than its factorization.

642251032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41035 (or 41031 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 642251032 is about 25342.6721558718. The cubic root of 642251032 is about 862.7830482342.

The spelling of 642251032 in words is "six hundred forty-two million, two hundred fifty-one thousand, thirty-two".