421216475 has 12 divisors (see below), whose sum is σ = 523244040. Its totient is φ = 336369600.

The previous prime is 421216459. The next prime is 421216487. The reversal of 421216475 is 574612124.

It is not a de Polignac number, because 421216475 - 2⁴ = 421216459 is a prime.

It is a super-2 number, since 2×421216475² = 354846637622851250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 581 + ... + 29030.

It is an arithmetic number, because the mean of its divisors is an integer number (43603670).

Almost surely, 2^421216475 is an apocalyptic number.

421216475 is a deficient number, since it is larger than the sum of its proper divisors (102027565).

421216475 is a wasteful number, since it uses less digits than its factorization.

421216475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30190 (or 30185 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 421216475 is about 20523.5590237171. The cubic root of 421216475 is about 749.6095597401.

Adding to 421216475 its reverse (574612124), we get a palindrome (995828599).

The spelling of 421216475 in words is "four hundred twenty-one million, two hundred sixteen thousand, four hundred seventy-five".