421050012164 has 72 divisors (see below), whose sum is σ = 830345060160. Its totient is φ = 186336013248.

The previous prime is 421050012091. The next prime is 421050012191. The reversal of 421050012164 is 461210050124.

It is a super-2 number, since 2×421050012164² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1280702 + ... + 1575530.

It is an arithmetic number, because the mean of its divisors is an integer number (11532570280).

Almost surely, 2^421050012164 is an apocalyptic number.

It is an amenable number.

421050012164 is a deficient number, since it is larger than the sum of its proper divisors (409295047996).

421050012164 is a wasteful number, since it uses less digits than its factorization.

421050012164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294937 (or 294916 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 421050012164 its reverse (461210050124), we get a palindrome (882260062288).

The spelling of 421050012164 in words is "four hundred twenty-one billion, fifty million, twelve thousand, one hundred sixty-four".