421220130432 has 64 divisors (see below), whose sum is σ = 1119090266400. Its totient is φ = 140378563584.

The previous prime is 421220130391. The next prime is 421220130467. The reversal of 421220130432 is 234031022124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853694 + ... + 2068482.

Almost surely, 2^421220130432 is an apocalyptic number.

It is an amenable number.

421220130432 is an abundant number, since it is smaller than the sum of its proper divisors (697870135968).

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

421220130432 is a wasteful number, since it uses less digits than its factorization.

421220130432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219913 (or 219901 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 421220130432 its reverse (234031022124), we get a palindrome (655251152556).

The spelling of 421220130432 in words is "four hundred twenty-one billion, two hundred twenty million, one hundred thirty thousand, four hundred thirty-two".