642024486136 has 64 divisors (see below), whose sum is σ = 1380786847200. Its totient is φ = 277147046400.

The previous prime is 642024486121. The next prime is 642024486137. The reversal of 642024486136 is 631684420246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642024486137) 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, 1906435 + ... + 2217778.

Almost surely, 2^642024486136 is an apocalyptic number.

It is an amenable number.

642024486136 is an abundant number, since it is smaller than the sum of its proper divisors (738762361064).

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

642024486136 is a wasteful number, since it uses less digits than its factorization.

642024486136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124320 (or 4124316 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 642024486136 in words is "six hundred forty-two billion, twenty-four million, four hundred eighty-six thousand, one hundred thirty-six".