642742627175 has 24 divisors (see below), whose sum is σ = 915216303360. Its totient is φ = 442846591200.

The previous prime is 642742627141. The next prime is 642742627183. The reversal of 642742627175 is 571726247246.

It is not a de Polignac number, because 642742627175 - 2⁸ = 642742626919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61501247 + ... + 61511696.

It is an arithmetic number, because the mean of its divisors is an integer number (38134012640).

Almost surely, 2^642742627175 is an apocalyptic number.

642742627175 is a deficient number, since it is larger than the sum of its proper divisors (272473676185).

642742627175 is a wasteful number, since it uses less digits than its factorization.

642742627175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123012983 (or 123012978 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 53.

The spelling of 642742627175 in words is "six hundred forty-two billion, seven hundred forty-two million, six hundred twenty-seven thousand, one hundred seventy-five".