842923157 has 2 divisors, whose sum is σ = 842923158. Its totient is φ = 842923156.

The previous prime is 842923099. The next prime is 842923177. The reversal of 842923157 is 751329248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 834863236 + 8059921 = 28894^2 + 2839^2 .

It is a cyclic number.

It is not a de Polignac number, because 842923157 - 2⁶ = 842923093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842923177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421461578 + 421461579.

It is an arithmetic number, because the mean of its divisors is an integer number (421461579).

Almost surely, 2^842923157 is an apocalyptic number.

It is an amenable number.

842923157 is a deficient number, since it is larger than the sum of its proper divisors (1).

842923157 is an equidigital number, since it uses as much as digits as its factorization.

842923157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 842923157 is about 29033.1389450056. The cubic root of 842923157 is about 944.6320178270.

The spelling of 842923157 in words is "eight hundred forty-two million, nine hundred twenty-three thousand, one hundred fifty-seven".