421421056546 has 16 divisors (see below), whose sum is σ = 722559499200. Its totient is φ = 180578173680.

The previous prime is 421421056543. The next prime is 421421056547. The reversal of 421421056546 is 645650124124.

It is a junction number, because it is equal to n+sod(n) for n = 421421056499 and 421421056508.

It is not an unprimeable number, because it can be changed into a prime (421421056543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2485896 + ... + 2650003.

It is an arithmetic number, because the mean of its divisors is an integer number (45159968700).

Almost surely, 2^421421056546 is an apocalyptic number.

421421056546 is a deficient number, since it is larger than the sum of its proper divisors (301138442654).

421421056546 is a wasteful number, since it uses less digits than its factorization.

421421056546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141769.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 421421056546 in words is "four hundred twenty-one billion, four hundred twenty-one million, fifty-six thousand, five hundred forty-six".