642132933 has 16 divisors (see below), whose sum is σ = 928233600. Its totient is φ = 392503104.

The previous prime is 642132913. The next prime is 642132937. The reversal of 642132933 is 339231246.

It is not a de Polignac number, because 642132933 - 2⁵ = 642132901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642132894 and 642132903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642132937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49441 + ... + 61062.

It is an arithmetic number, because the mean of its divisors is an integer number (58014600).

Almost surely, 2^642132933 is an apocalyptic number.

It is an amenable number.

642132933 is a deficient number, since it is larger than the sum of its proper divisors (286100667).

642132933 is a wasteful number, since it uses less digits than its factorization.

642132933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110668.

The product of its digits is 23328, while the sum is 33.

The square root of 642132933 is about 25340.3420063739. The cubic root of 642132933 is about 862.7301613015.

The spelling of 642132933 in words is "six hundred forty-two million, one hundred thirty-two thousand, nine hundred thirty-three".