421255455 has 8 divisors (see below), whose sum is σ = 674008752. Its totient is φ = 224669568.

The previous prime is 421255453. The next prime is 421255481. The reversal of 421255455 is 554552124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421255455 - 2¹ = 421255453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421255451) 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, 14041834 + ... + 14041863.

It is an arithmetic number, because the mean of its divisors is an integer number (84251094).

Almost surely, 2^421255455 is an apocalyptic number.

421255455 is a deficient number, since it is larger than the sum of its proper divisors (252753297).

421255455 is a wasteful number, since it uses less digits than its factorization.

421255455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28083705.

The product of its digits is 40000, while the sum is 33.

The square root of 421255455 is about 20524.5086421088. The cubic root of 421255455 is about 749.6326823553.

The spelling of 421255455 in words is "four hundred twenty-one million, two hundred fifty-five thousand, four hundred fifty-five".