421523842512 has 40 divisors (see below), whose sum is σ = 1090234595520. Its totient is φ = 140340463360.

The previous prime is 421523842511. The next prime is 421523842561. The reversal of 421523842512 is 215248325124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421523842511) 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 7 ways as a sum of consecutive naturals, for example, 5193189 + ... + 5273732.

It is an arithmetic number, because the mean of its divisors is an integer number (27255864888).

Almost surely, 2^421523842512 is an apocalyptic number.

It is an amenable number.

421523842512 is an abundant number, since it is smaller than the sum of its proper divisors (668710753008).

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

421523842512 is a wasteful number, since it uses less digits than its factorization.

421523842512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10467771 (or 10467765 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

The spelling of 421523842512 in words is "four hundred twenty-one billion, five hundred twenty-three million, eight hundred forty-two thousand, five hundred twelve".