421226146952 has 108 divisors (see below), whose sum is σ = 903579750495. Its totient is φ = 183981597696.

The previous prime is 421226146951. The next prime is 421226146961. The reversal of 421226146952 is 259641622124.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 26045440996 + 395180705956 = 161386^2 + 628634^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=458926.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421226146951) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 453418424 + ... + 453419352.

Almost surely, 2^421226146952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421226146952

421226146952 is an abundant number, since it is smaller than the sum of its proper divisors (482353603543).

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

421226146952 is an equidigital number, since it uses as much as digits as its factorization.

421226146952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928 (or 963 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The spelling of 421226146952 in words is "four hundred twenty-one billion, two hundred twenty-six million, one hundred forty-six thousand, nine hundred fifty-two".