122744057 has 2 divisors, whose sum is σ = 122744058. Its totient is φ = 122744056.

The previous prime is 122744021. The next prime is 122744071. The reversal of 122744057 is 750447221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105596176 + 17147881 = 10276^2 + 4141^2 .

It is an emirp because it is prime and its reverse (750447221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122744057 - 2⁶ = 122743993 is a prime.

It is a super-2 number, since 2×122744057² = 30132207057638498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122744257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61372028 + 61372029.

It is an arithmetic number, because the mean of its divisors is an integer number (61372029).

Almost surely, 2^122744057 is an apocalyptic number.

It is an amenable number.

122744057 is a deficient number, since it is larger than the sum of its proper divisors (1).

122744057 is an equidigital number, since it uses as much as digits as its factorization.

122744057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 122744057 is about 11078.9916959983. The cubic root of 122744057 is about 496.9737971441.

The spelling of 122744057 in words is "one hundred twenty-two million, seven hundred forty-four thousand, fifty-seven".