642325126 has 16 divisors (see below), whose sum is σ = 987369264. Its totient is φ = 313272544.

The previous prime is 642325091. The next prime is 642325129. The reversal of 642325126 is 621523246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642325129) 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, 825 + ... + 35851.

It is an arithmetic number, because the mean of its divisors is an integer number (61710579).

Almost surely, 2^642325126 is an apocalyptic number.

642325126 is a deficient number, since it is larger than the sum of its proper divisors (345044138).

642325126 is a wasteful number, since it uses less digits than its factorization.

642325126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35255.

The product of its digits is 17280, while the sum is 31.

The square root of 642325126 is about 25344.1339564010. The cubic root of 642325126 is about 862.8162255983.

The spelling of 642325126 in words is "six hundred forty-two million, three hundred twenty-five thousand, one hundred twenty-six".