642912083019 has 24 divisors (see below), whose sum is σ = 939195308480. Its totient is φ = 423758345472.

The previous prime is 642912082997. The next prime is 642912083027. The reversal of 642912083019 is 910380219246.

642912083019 is a `hidden beast` number, since 6 + 429 + 1 + 208 + 3 + 0 + 19 = 666.

642912083019 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 642912083019 - 2²⁵ = 642878528587 is a prime.

It is a super-2 number, since 2×642912083019² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (642912083039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253534 + ... + 1161939.

Almost surely, 2^642912083019 is an apocalyptic number.

642912083019 is a deficient number, since it is larger than the sum of its proper divisors (296283225461).

642912083019 is a wasteful number, since it uses less digits than its factorization.

642912083019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416051 (or 1416048 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 642912083019 in words is "six hundred forty-two billion, nine hundred twelve million, eighty-three thousand, nineteen".