421341643120 has 40 divisors (see below), whose sum is σ = 979665712560. Its totient is φ = 168528675840.

The previous prime is 421341643087. The next prime is 421341643153. The reversal of 421341643120 is 21346143124.

It is an interprime number because it is at equal distance from previous prime (421341643087) and next prime (421341643153).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×421341643120² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750216 + ... + 1976344.

It is an arithmetic number, because the mean of its divisors is an integer number (24491642814).

Almost surely, 2^421341643120 is an apocalyptic number.

421341643120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421341643120 is an abundant number, since it is smaller than the sum of its proper divisors (558324069440).

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

421341643120 is a wasteful number, since it uses less digits than its factorization.

421341643120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249433 (or 249427 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 421341643120 its reverse (21346143124), we get a palindrome (442687786244).

The spelling of 421341643120 in words is "four hundred twenty-one billion, three hundred forty-one million, six hundred forty-three thousand, one hundred twenty".