421434244432409 has 16 divisors (see below), whose sum is σ = 458360335510224. Its totient is φ = 385152407136000.

The previous prime is 421434244432349. The next prime is 421434244432433. The reversal of 421434244432409 is 904234442434124.

It can be written as a sum of positive squares in 8 ways, for example, as 10150774416784 + 411283470015625 = 3186028^2 + 20280125^2 .

It is a cyclic number.

It is not a de Polignac number, because 421434244432409 - 2⁸ = 421434244432153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421434244432909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36619847 + ... + 46732019.

It is an arithmetic number, because the mean of its divisors is an integer number (28647520969389).

Almost surely, 2^{421434244432409} is an apocalyptic number.

It is an amenable number.

421434244432409 is a deficient number, since it is larger than the sum of its proper divisors (36926091077815).

421434244432409 is a wasteful number, since it uses less digits than its factorization.

421434244432409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10144028.

The product of its (nonzero) digits is 10616832, while the sum is 50.

The spelling of 421434244432409 in words is "four hundred twenty-one trillion, four hundred thirty-four billion, two hundred forty-four million, four hundred thirty-two thousand, four hundred nine".