422806157 has 2 divisors, whose sum is σ = 422806158. Its totient is φ = 422806156.

The previous prime is 422806129. The next prime is 422806187. The reversal of 422806157 is 751608224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 408282436 + 14523721 = 20206^2 + 3811^2 .

It is a cyclic number.

It is not a de Polignac number, because 422806157 - 2¹⁰ = 422805133 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 (422806127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211403078 + 211403079.

It is an arithmetic number, because the mean of its divisors is an integer number (211403079).

Almost surely, 2^422806157 is an apocalyptic number.

It is an amenable number.

422806157 is a deficient number, since it is larger than the sum of its proper divisors (1).

422806157 is an equidigital number, since it uses as much as digits as its factorization.

422806157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 422806157 is about 20562.2507766052. The cubic root of 422806157 is about 750.5513912650.

The spelling of 422806157 in words is "four hundred twenty-two million, eight hundred six thousand, one hundred fifty-seven".