421010323323421 has 6 divisors (see below), whose sum is σ = 455886918155130. Its totient is φ = 388624913836848.

The previous prime is 421010323323349. The next prime is 421010323323437. The reversal of 421010323323421 is 124323323010124.

It can be written as a sum of positive squares in 3 ways, for example, as 13622078456100 + 407388244867321 = 3690810^2 + 20183861^2 .

It is not a de Polignac number, because 421010323323421 - 2²¹ = 421010321226269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421010323323721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1245592672386 + ... + 1245592672723.

It is an arithmetic number, because the mean of its divisors is an integer number (75981153025855).

Almost surely, 2^{421010323323421} is an apocalyptic number.

It is an amenable number.

421010323323421 is a deficient number, since it is larger than the sum of its proper divisors (34876594831709).

421010323323421 is a wasteful number, since it uses less digits than its factorization.

421010323323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491185345135 (or 2491185345122 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 421010323323421 its reverse (124323323010124), we get a palindrome (545333646333545).

The spelling of 421010323323421 in words is "four hundred twenty-one trillion, ten billion, three hundred twenty-three million, three hundred twenty-three thousand, four hundred twenty-one".