421261208 has 16 divisors (see below), whose sum is σ = 798741000. Its totient is φ = 208263616.

The previous prime is 421261199. The next prime is 421261223. The reversal of 421261208 is 802162124.

It is a happy number.

It is a super-2 number, since 2×421261208² = 354922010731238528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 295118 + ... + 296541.

Almost surely, 2^421261208 is an apocalyptic number.

It is an amenable number.

421261208 is a deficient number, since it is larger than the sum of its proper divisors (377479792).

421261208 is a wasteful number, since it uses less digits than its factorization.

421261208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591754 (or 591750 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 421261208 is about 20524.6487911487. The cubic root of 421261208 is about 749.6360948667.

It can be divided in two parts, 42126 and 1208, that added together give a palindrome (43334).

The spelling of 421261208 in words is "four hundred twenty-one million, two hundred sixty-one thousand, two hundred eight".