421345164 has 12 divisors (see below), whose sum is σ = 983138744. Its totient is φ = 140448384.

The previous prime is 421345103. The next prime is 421345189. The reversal of 421345164 is 461543124.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17556037 + ... + 17556060.

Almost surely, 2^421345164 is an apocalyptic number.

It is an amenable number.

421345164 is an abundant number, since it is smaller than the sum of its proper divisors (561793580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421345164 is a wasteful number, since it uses less digits than its factorization.

421345164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35112104 (or 35112102 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 421345164 is about 20526.6939374075. The cubic root of 421345164 is about 749.6858915773.

Adding to 421345164 its reverse (461543124), we get a palindrome (882888288).

The spelling of 421345164 in words is "four hundred twenty-one million, three hundred forty-five thousand, one hundred sixty-four".