642634103236 has 12 divisors (see below), whose sum is σ = 1124615351440. Its totient is φ = 321315431400.

The previous prime is 642634103233. The next prime is 642634103257. The reversal of 642634103236 is 632301436246.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (642634103233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154875 + ... + 1618333.

Almost surely, 2^642634103236 is an apocalyptic number.

It is an amenable number.

642634103236 is a deficient number, since it is larger than the sum of its proper divisors (481981248204).

642634103236 is a wasteful number, since it uses less digits than its factorization.

642634103236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810114 (or 810112 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 40.

The spelling of 642634103236 in words is "six hundred forty-two billion, six hundred thirty-four million, one hundred three thousand, two hundred thirty-six".