642341126 has 32 divisors (see below), whose sum is σ = 1145551680. Its totient is φ = 264297600.

The previous prime is 642341123. The next prime is 642341149. The reversal of 642341126 is 621143246.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642341123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69116 + ... + 77856.

It is an arithmetic number, because the mean of its divisors is an integer number (35798490).

Almost surely, 2^642341126 is an apocalyptic number.

642341126 is a deficient number, since it is larger than the sum of its proper divisors (503210554).

642341126 is a wasteful number, since it uses less digits than its factorization.

642341126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960.

The product of its digits is 6912, while the sum is 29.

The square root of 642341126 is about 25344.4496093326. The cubic root of 642341126 is about 862.8233896467.

The spelling of 642341126 in words is "six hundred forty-two million, three hundred forty-one thousand, one hundred twenty-six".