421960157 has 2 divisors, whose sum is σ = 421960158. Its totient is φ = 421960156.

The previous prime is 421960129. The next prime is 421960163. The reversal of 421960157 is 751069124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392594596 + 29365561 = 19814^2 + 5419^2 .

It is a cyclic number.

It is not a de Polignac number, because 421960157 - 2¹⁰ = 421959133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421960177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210980078 + 210980079.

It is an arithmetic number, because the mean of its divisors is an integer number (210980079).

Almost surely, 2^421960157 is an apocalyptic number.

It is an amenable number.

421960157 is a deficient number, since it is larger than the sum of its proper divisors (1).

421960157 is an equidigital number, since it uses as much as digits as its factorization.

421960157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 421960157 is about 20541.6687978363. The cubic root of 421960157 is about 750.0504600124.

The spelling of 421960157 in words is "four hundred twenty-one million, nine hundred sixty thousand, one hundred fifty-seven".