421184236452 has 48 divisors (see below), whose sum is σ = 1123191444480. Its totient is φ = 120334766112.

The previous prime is 421184236387. The next prime is 421184236471. The reversal of 421184236452 is 254632481124.

It is a super-2 number, since 2×421184236452² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4221163 + ... + 4319789.

It is an arithmetic number, because the mean of its divisors is an integer number (23399821760).

Almost surely, 2^421184236452 is an apocalyptic number.

421184236452 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

421184236452 is an abundant number, since it is smaller than the sum of its proper divisors (702007208028).

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

421184236452 is a wasteful number, since it uses less digits than its factorization.

421184236452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149480 (or 149478 counting only the distinct ones).

The product of its digits is 368640, while the sum is 42.

The spelling of 421184236452 in words is "four hundred twenty-one billion, one hundred eighty-four million, two hundred thirty-six thousand, four hundred fifty-two".