421402302441209 has 4 divisors (see below), whose sum is σ = 421402833646416. Its totient is φ = 421401771236004.

The previous prime is 421402302441191. The next prime is 421402302441223. The reversal of 421402302441209 is 902144203204124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421402302441209 - 2⁸ = 421402302440953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421402302441509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264410879 + ... + 265999844.

It is an arithmetic number, because the mean of its divisors is an integer number (105350708411604).

Almost surely, 2^{421402302441209} is an apocalyptic number.

It is an amenable number.

421402302441209 is a deficient number, since it is larger than the sum of its proper divisors (531205207).

421402302441209 is an equidigital number, since it uses as much as digits as its factorization.

421402302441209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531205206.

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 421402302441209 in words is "four hundred twenty-one trillion, four hundred two billion, three hundred two million, four hundred forty-one thousand, two hundred nine".