122696857 has 2 divisors, whose sum is σ = 122696858. Its totient is φ = 122696856.

The previous prime is 122696843. The next prime is 122696897. The reversal of 122696857 is 758696221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111007296 + 11689561 = 10536^2 + 3419^2 .

It is an emirp because it is prime and its reverse (758696221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122696857 - 2¹⁵ = 122664089 is a prime.

It is not a weakly prime, because it can be changed into another prime (122696897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61348428 + 61348429.

It is an arithmetic number, because the mean of its divisors is an integer number (61348429).

Almost surely, 2^122696857 is an apocalyptic number.

It is an amenable number.

122696857 is a deficient number, since it is larger than the sum of its proper divisors (1).

122696857 is an equidigital number, since it uses as much as digits as its factorization.

122696857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 122696857 is about 11076.8613334283. The cubic root of 122696857 is about 496.9100868753.

The spelling of 122696857 in words is "one hundred twenty-two million, six hundred ninety-six thousand, eight hundred fifty-seven".