421185655 has 16 divisors (see below), whose sum is σ = 556836768. Its totient is φ = 303280000.

The previous prime is 421185631. The next prime is 421185773. The reversal of 421185655 is 556581124.

It is not a de Polignac number, because 421185655 - 2⁹ = 421185143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32356 + ... + 43465.

It is an arithmetic number, because the mean of its divisors is an integer number (34802298).

Almost surely, 2^421185655 is an apocalyptic number.

421185655 is a deficient number, since it is larger than the sum of its proper divisors (135651113).

421185655 is a wasteful number, since it uses less digits than its factorization.

421185655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75938.

The product of its digits is 48000, while the sum is 37.

The square root of 421185655 is about 20522.8081655508. The cubic root of 421185655 is about 749.5912765599.

The spelling of 421185655 in words is "four hundred twenty-one million, one hundred eighty-five thousand, six hundred fifty-five".