421369126920 has 256 divisors, whose sum is σ = 1609600204800. Its totient is φ = 96049877760.

The previous prime is 421369126909. The next prime is 421369126921. The reversal of 421369126920 is 29621963124.

421369126920 is a `hidden beast` number, since 4 + 2 + 1 + 369 + 1 + 269 + 20 = 666.

It is a super-2 number, since 2×421369126920² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (421369126921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2698585 + ... + 2850455.

It is an arithmetic number, because the mean of its divisors is an integer number (6287500800).

Almost surely, 2^421369126920 is an apocalyptic number.

421369126920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421369126920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804800102400).

421369126920 is an abundant number, since it is smaller than the sum of its proper divisors (1188231077880).

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

421369126920 is a wasteful number, since it uses less digits than its factorization.

421369126920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152265 (or 152255 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 421369126920 in words is "four hundred twenty-one billion, three hundred sixty-nine million, one hundred twenty-six thousand, nine hundred twenty".