421656475 has 12 divisors (see below), whose sum is σ = 523131696. Its totient is φ = 337146080.

The previous prime is 421656419. The next prime is 421656503. The reversal of 421656475 is 574656124.

It is a happy number.

It is not a de Polignac number, because 421656475 - 2⁹ = 421655963 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 64194 + ... + 70456.

It is an arithmetic number, because the mean of its divisors is an integer number (43594308).

Almost surely, 2^421656475 is an apocalyptic number.

421656475 is a deficient number, since it is larger than the sum of its proper divisors (101475221).

421656475 is a wasteful number, since it uses less digits than its factorization.

421656475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8966 (or 8961 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 421656475 is about 20534.2756142017. The cubic root of 421656475 is about 749.8704813382.

The spelling of 421656475 in words is "four hundred twenty-one million, six hundred fifty-six thousand, four hundred seventy-five".