642034442271 has 16 divisors (see below), whose sum is σ = 885602440800. Its totient is φ = 413245959168.

The previous prime is 642034442261. The next prime is 642034442297. The reversal of 642034442271 is 172244430246.

It is not a de Polignac number, because 642034442271 - 2⁷ = 642034442143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642034442261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2080935 + ... + 2369463.

It is an arithmetic number, because the mean of its divisors is an integer number (55350152550).

Almost surely, 2^642034442271 is an apocalyptic number.

642034442271 is a deficient number, since it is larger than the sum of its proper divisors (243567998529).

642034442271 is a wasteful number, since it uses less digits than its factorization.

642034442271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314138.

The product of its (nonzero) digits is 258048, while the sum is 39.

The spelling of 642034442271 in words is "six hundred forty-two billion, thirty-four million, four hundred forty-two thousand, two hundred seventy-one".