642040134 has 32 divisors (see below), whose sum is σ = 1354848000. Its totient is φ = 202271904.

The previous prime is 642040111. The next prime is 642040141. The reversal of 642040134 is 431040246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43632 + ... + 56460.

It is an arithmetic number, because the mean of its divisors is an integer number (42339000).

Almost surely, 2^642040134 is an apocalyptic number.

642040134 is an abundant number, since it is smaller than the sum of its proper divisors (712807866).

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

642040134 is a wasteful number, since it uses less digits than its factorization.

642040134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13292.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 642040134 is about 25338.5108875798. The cubic root of 642040134 is about 862.6885996304.

The spelling of 642040134 in words is "six hundred forty-two million, forty thousand, one hundred thirty-four".