421436324269 has 2 divisors, whose sum is σ = 421436324270. Its totient is φ = 421436324268.

The previous prime is 421436324219. The next prime is 421436324279. The reversal of 421436324269 is 962423634124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389631882025 + 31804442244 = 624205^2 + 178338^2 .

It is a cyclic number.

It is not a de Polignac number, because 421436324269 - 2²³ = 421427935661 is a prime.

It is a super-2 number, since 2×421436324269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421436324219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210718162134 + 210718162135.

It is an arithmetic number, because the mean of its divisors is an integer number (210718162135).

Almost surely, 2^421436324269 is an apocalyptic number.

It is an amenable number.

421436324269 is a deficient number, since it is larger than the sum of its proper divisors (1).

421436324269 is an equidigital number, since it uses as much as digits as its factorization.

421436324269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 46.

The spelling of 421436324269 in words is "four hundred twenty-one billion, four hundred thirty-six million, three hundred twenty-four thousand, two hundred sixty-nine".