421334824318 has 4 divisors (see below), whose sum is σ = 632002236480. Its totient is φ = 210667412158.

The previous prime is 421334824307. The next prime is 421334824319. The reversal of 421334824318 is 813428433124.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421334824319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105333706078 + ... + 105333706081.

It is an arithmetic number, because the mean of its divisors is an integer number (158000559120).

Almost surely, 2^421334824318 is an apocalyptic number.

421334824318 is a deficient number, since it is larger than the sum of its proper divisors (210667412162).

421334824318 is a wasteful number, since it uses less digits than its factorization.

421334824318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210667412161.

The product of its digits is 442368, while the sum is 43.

The spelling of 421334824318 in words is "four hundred twenty-one billion, three hundred thirty-four million, eight hundred twenty-four thousand, three hundred eighteen".