421424455 has 8 divisors (see below), whose sum is σ = 505906704. Its totient is φ = 337008000.

The previous prime is 421424431. The next prime is 421424483. The reversal of 421424455 is 554424124.

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

It is not a de Polignac number, because 421424455 - 2⁷ = 421424327 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 7 ways as a sum of consecutive naturals, for example, 1041 + ... + 29050.

It is an arithmetic number, because the mean of its divisors is an integer number (63238338).

Almost surely, 2^421424455 is an apocalyptic number.

421424455 is a deficient number, since it is larger than the sum of its proper divisors (84482249).

421424455 is a wasteful number, since it uses less digits than its factorization.

421424455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32897.

The product of its digits is 25600, while the sum is 31.

The square root of 421424455 is about 20528.6252584044. The cubic root of 421424455 is about 749.7329152693.

Adding to 421424455 its reverse (554424124), we get a palindrome (975848579).

The spelling of 421424455 in words is "four hundred twenty-one million, four hundred twenty-four thousand, four hundred fifty-five".