642742627174 has 4 divisors (see below), whose sum is σ = 964113940764. Its totient is φ = 321371313586.

The previous prime is 642742627141. The next prime is 642742627183. The reversal of 642742627174 is 471726247246.

It is a happy number.

642742627174 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160685656792 + ... + 160685656795.

It is an arithmetic number, because the mean of its divisors is an integer number (241028485191).

Almost surely, 2^642742627174 is an apocalyptic number.

642742627174 is a deficient number, since it is larger than the sum of its proper divisors (321371313590).

642742627174 is a wasteful number, since it uses less digits than its factorization.

642742627174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321371313589.

The product of its digits is 6322176, while the sum is 52.

The spelling of 642742627174 in words is "six hundred forty-two billion, seven hundred forty-two million, six hundred twenty-seven thousand, one hundred seventy-four".