642076134 has 32 divisors (see below), whose sum is σ = 1486187520. Its totient is φ = 181127232.

The previous prime is 642076121. The next prime is 642076159. The reversal of 642076134 is 431670246.

It is a happy number.

642076134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 642076095 and 642076104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93439 + ... + 100074.

It is an arithmetic number, because the mean of its divisors is an integer number (46443360).

Almost surely, 2^642076134 is an apocalyptic number.

642076134 is an abundant number, since it is smaller than the sum of its proper divisors (844111386).

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

642076134 is a wasteful number, since it uses less digits than its factorization.

642076134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193604.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 642076134 is about 25339.2212587522. The cubic root of 642076134 is about 862.7047233416.

The spelling of 642076134 in words is "six hundred forty-two million, seventy-six thousand, one hundred thirty-four".