122944457 has 2 divisors, whose sum is σ = 122944458. Its totient is φ = 122944456.

The previous prime is 122944447. The next prime is 122944469. The reversal of 122944457 is 754449221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122855056 + 89401 = 11084^2 + 299^2 .

It is an emirp because it is prime and its reverse (754449221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122944457 - 2⁸ = 122944201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122944457.

It is not a weakly prime, because it can be changed into another prime (122944447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61472228 + 61472229.

It is an arithmetic number, because the mean of its divisors is an integer number (61472229).

Almost surely, 2^122944457 is an apocalyptic number.

It is an amenable number.

122944457 is a deficient number, since it is larger than the sum of its proper divisors (1).

122944457 is an equidigital number, since it uses as much as digits as its factorization.

122944457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 122944457 is about 11088.0321518293. The cubic root of 122944457 is about 497.2441140933.

The spelling of 122944457 in words is "one hundred twenty-two million, nine hundred forty-four thousand, four hundred fifty-seven".