420100742309 has 2 divisors, whose sum is σ = 420100742310. Its totient is φ = 420100742308.

The previous prime is 420100742291. The next prime is 420100742317. The reversal of 420100742309 is 903247001024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400625702500 + 19475039809 = 632950^2 + 139553^2 .

It is a cyclic number.

It is not a de Polignac number, because 420100742309 - 2²⁰ = 420099693733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420100742339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210050371154 + 210050371155.

It is an arithmetic number, because the mean of its divisors is an integer number (210050371155).

Almost surely, 2^420100742309 is an apocalyptic number.

It is an amenable number.

420100742309 is a deficient number, since it is larger than the sum of its proper divisors (1).

420100742309 is an equidigital number, since it uses as much as digits as its factorization.

420100742309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 420100742309 in words is "four hundred twenty billion, one hundred million, seven hundred forty-two thousand, three hundred nine".