642013473132 has 36 divisors (see below), whose sum is σ = 1632823647000. Its totient is φ = 212691578112.

The previous prime is 642013473131. The next prime is 642013473133. The reversal of 642013473132 is 231374310246.

642013473132 is a `hidden beast` number, since 6 + 42 + 0 + 13 + 473 + 132 = 666.

It is an interprime number because it is at equal distance from previous prime (642013473131) and next prime (642013473133).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54698757 + ... + 54710492.

Almost surely, 2^642013473132 is an apocalyptic number.

It is an amenable number.

642013473132 is an abundant number, since it is smaller than the sum of its proper divisors (990810173868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642013473132 is a wasteful number, since it uses less digits than its factorization.

642013473132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109409422 (or 109409417 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

Adding to 642013473132 its reverse (231374310246), we get a palindrome (873387783378).

The spelling of 642013473132 in words is "six hundred forty-two billion, thirteen million, four hundred seventy-three thousand, one hundred thirty-two".