642057335 has 16 divisors (see below), whose sum is σ = 790413120. Its totient is φ = 500386560.

The previous prime is 642057307. The next prime is 642057349. The reversal of 642057335 is 533750246.

It is not a de Polignac number, because 642057335 - 2¹⁸ = 641795191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642057295 and 642057304.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 170129 + ... + 173861.

It is an arithmetic number, because the mean of its divisors is an integer number (49400820).

Almost surely, 2^642057335 is an apocalyptic number.

642057335 is a deficient number, since it is larger than the sum of its proper divisors (148355785).

642057335 is a wasteful number, since it uses less digits than its factorization.

642057335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618.

The product of its (nonzero) digits is 75600, while the sum is 35.

The square root of 642057335 is about 25338.8503093570. The cubic root of 642057335 is about 862.6963037044.

The spelling of 642057335 in words is "six hundred forty-two million, fifty-seven thousand, three hundred thirty-five".