420234324157 has 2 divisors, whose sum is σ = 420234324158. Its totient is φ = 420234324156.

The previous prime is 420234324089. The next prime is 420234324161. The reversal of 420234324157 is 751423432024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280413670681 + 139820653476 = 529541^2 + 373926^2 .

It is a cyclic number.

It is not a de Polignac number, because 420234324157 - 2²⁷ = 420100106429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420234324187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210117162078 + 210117162079.

It is an arithmetic number, because the mean of its divisors is an integer number (210117162079).

Almost surely, 2^420234324157 is an apocalyptic number.

It is an amenable number.

420234324157 is a deficient number, since it is larger than the sum of its proper divisors (1).

420234324157 is an equidigital number, since it uses as much as digits as its factorization.

420234324157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 37.

The spelling of 420234324157 in words is "four hundred twenty billion, two hundred thirty-four million, three hundred twenty-four thousand, one hundred fifty-seven".