642304343403246 has 32 divisors (see below), whose sum is σ = 1286692794604800. Its totient is φ = 213754101240960.

The previous prime is 642304343403227. The next prime is 642304343403263.

642304343403246 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 642304343403195 and 642304343403204.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 633134991 + ... + 634148661.

It is an arithmetic number, because the mean of its divisors is an integer number (40209149831400).

Almost surely, 2^{642304343403246} is an apocalyptic number.

642304343403246 is an abundant number, since it is smaller than the sum of its proper divisors (644388451201554).

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

642304343403246 is a wasteful number, since it uses less digits than its factorization.

642304343403246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184904.

The product of its (nonzero) digits is 11943936, while the sum is 48.

The spelling of 642304343403246 in words is "six hundred forty-two trillion, three hundred four billion, three hundred forty-three million, four hundred three thousand, two hundred forty-six".