421545544 has 16 divisors (see below), whose sum is σ = 903312000. Its totient is φ = 180662352.

The previous prime is 421545539. The next prime is 421545557. The reversal of 421545544 is 445545124.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3763744 + ... + 3763855.

It is an arithmetic number, because the mean of its divisors is an integer number (56457000).

Almost surely, 2^421545544 is an apocalyptic number.

It is an amenable number.

421545544 is an abundant number, since it is smaller than the sum of its proper divisors (481766456).

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

421545544 is a wasteful number, since it uses less digits than its factorization.

421545544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7527612 (or 7527608 counting only the distinct ones).

The product of its digits is 64000, while the sum is 34.

The square root of 421545544 is about 20531.5743185952. The cubic root of 421545544 is about 749.8047159714.

The spelling of 421545544 in words is "four hundred twenty-one million, five hundred forty-five thousand, five hundred forty-four".