642013473134 has 16 divisors (see below), whose sum is σ = 1051221303936. Its totient is φ = 291642694200.

The previous prime is 642013473133. The next prime is 642013473149. The reversal of 642013473134 is 431374310246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642013473131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9044432 + ... + 9115139.

It is an arithmetic number, because the mean of its divisors is an integer number (65701331496).

Almost surely, 2^642013473134 is an apocalyptic number.

642013473134 is a deficient number, since it is larger than the sum of its proper divisors (409207830802).

642013473134 is a wasteful number, since it uses less digits than its factorization.

642013473134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18161191.

The product of its (nonzero) digits is 145152, while the sum is 38.

The spelling of 642013473134 in words is "six hundred forty-two billion, thirteen million, four hundred seventy-three thousand, one hundred thirty-four".