420842207231 has 2 divisors, whose sum is σ = 420842207232. Its totient is φ = 420842207230.

The previous prime is 420842207179. The next prime is 420842207251. The reversal of 420842207231 is 132702248024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420842207231 is a prime.

It is a super-2 number, since 2×420842207231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420842207191 and 420842207200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420842207251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210421103615 + 210421103616.

It is an arithmetic number, because the mean of its divisors is an integer number (210421103616).

Almost surely, 2^420842207231 is an apocalyptic number.

420842207231 is a deficient number, since it is larger than the sum of its proper divisors (1).

420842207231 is an equidigital number, since it uses as much as digits as its factorization.

420842207231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 35.

The spelling of 420842207231 in words is "four hundred twenty billion, eight hundred forty-two million, two hundred seven thousand, two hundred thirty-one".