420131201334389 has 2 divisors, whose sum is σ = 420131201334390. Its totient is φ = 420131201334388.

The previous prime is 420131201334367. The next prime is 420131201334419. The reversal of 420131201334389 is 983433102131024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412302162300625 + 7829039033764 = 20305225^2 + 2798042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420131201334389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420131201334349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210065600667194 + 210065600667195.

It is an arithmetic number, because the mean of its divisors is an integer number (210065600667195).

Almost surely, 2^{420131201334389} is an apocalyptic number.

It is an amenable number.

420131201334389 is a deficient number, since it is larger than the sum of its proper divisors (1).

420131201334389 is an equidigital number, since it uses as much as digits as its factorization.

420131201334389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 420131201334389 in words is "four hundred twenty trillion, one hundred thirty-one billion, two hundred one million, three hundred thirty-four thousand, three hundred eighty-nine".