642024892 has 12 divisors (see below), whose sum is σ = 1128869896. Its totient is φ = 319490640.

The previous prime is 642024847. The next prime is 642024899. The reversal of 642024892 is 298420246.

It is a super-2 number, since 2×642024892² = 824391923895223328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642024899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379503 + ... + 381190.

Almost surely, 2^642024892 is an apocalyptic number.

It is an amenable number.

642024892 is a deficient number, since it is larger than the sum of its proper divisors (486845004).

642024892 is a wasteful number, since it uses less digits than its factorization.

642024892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760908 (or 760906 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 642024892 is about 25338.2101183174. The cubic root of 642024892 is about 862.6817728486.

The spelling of 642024892 in words is "six hundred forty-two million, twenty-four thousand, eight hundred ninety-two".