642954059 has 16 divisors (see below), whose sum is σ = 743510016. Its totient is φ = 549494400.

The previous prime is 642954047. The next prime is 642954071. The reversal of 642954059 is 950459246.

642954059 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (642954047) and next prime (642954071).

It is not a de Polignac number, because 642954059 - 2²⁸ = 374518603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642954359) 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, 246854 + ... + 249444.

It is an arithmetic number, because the mean of its divisors is an integer number (46469376).

Almost surely, 2^642954059 is an apocalyptic number.

642954059 is a deficient number, since it is larger than the sum of its proper divisors (100555957).

642954059 is a wasteful number, since it uses less digits than its factorization.

642954059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 642954059 is about 25356.5387819395. The cubic root of 642954059 is about 863.0977427295.

The spelling of 642954059 in words is "six hundred forty-two million, nine hundred fifty-four thousand, fifty-nine".