642237134 has 16 divisors (see below), whose sum is σ = 1201067136. Its totient is φ = 250222200.

The previous prime is 642237133. The next prime is 642237179. The reversal of 642237134 is 431732246.

642237134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×642237134³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 642237134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642237133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2085032 + ... + 2085339.

It is an arithmetic number, because the mean of its divisors is an integer number (75066696).

Almost surely, 2^642237134 is an apocalyptic number.

642237134 is a deficient number, since it is larger than the sum of its proper divisors (558830002).

642237134 is a wasteful number, since it uses less digits than its factorization.

642237134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170391.

The product of its digits is 24192, while the sum is 32.

The square root of 642237134 is about 25342.3979528378. The cubic root of 642237134 is about 862.7768247874.

The spelling of 642237134 in words is "six hundred forty-two million, two hundred thirty-seven thousand, one hundred thirty-four".