421266036439 has 2 divisors, whose sum is σ = 421266036440. Its totient is φ = 421266036438.

The previous prime is 421266036437. The next prime is 421266036469. The reversal of 421266036439 is 934630662124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421266036439 - 2¹ = 421266036437 is a prime.

Together with 421266036437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421266036431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210633018219 + 210633018220.

It is an arithmetic number, because the mean of its divisors is an integer number (210633018220).

Almost surely, 2^421266036439 is an apocalyptic number.

421266036439 is a deficient number, since it is larger than the sum of its proper divisors (1).

421266036439 is an equidigital number, since it uses as much as digits as its factorization.

421266036439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 46.

The spelling of 421266036439 in words is "four hundred twenty-one billion, two hundred sixty-six million, thirty-six thousand, four hundred thirty-nine".