642050635 has 16 divisors (see below), whose sum is σ = 806135040. Its totient is φ = 489978720.

The previous prime is 642050627. The next prime is 642050653. The reversal of 642050635 is 536050246.

It is not a de Polignac number, because 642050635 - 2³ = 642050627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642050597 and 642050606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36220 + ... + 50950.

It is an arithmetic number, because the mean of its divisors is an integer number (50383440).

Almost surely, 2^642050635 is an apocalyptic number.

642050635 is a deficient number, since it is larger than the sum of its proper divisors (164084405).

642050635 is a wasteful number, since it uses less digits than its factorization.

642050635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15138.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 642050635 is about 25338.7181009616. The cubic root of 642050635 is about 862.6933028896.

The spelling of 642050635 in words is "six hundred forty-two million, fifty thousand, six hundred thirty-five".