642452311324 has 48 divisors (see below), whose sum is σ = 1179558326016. Its totient is φ = 305589715200.

The previous prime is 642452311321. The next prime is 642452311331. The reversal of 642452311324 is 423113254246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642452311321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29708964 + ... + 29730580.

It is an arithmetic number, because the mean of its divisors is an integer number (24574131792).

Almost surely, 2^642452311324 is an apocalyptic number.

It is an amenable number.

642452311324 is a deficient number, since it is larger than the sum of its proper divisors (537106014692).

642452311324 is a wasteful number, since it uses less digits than its factorization.

642452311324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23386 (or 23384 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The spelling of 642452311324 in words is "six hundred forty-two billion, four hundred fifty-two million, three hundred eleven thousand, three hundred twenty-four".