122126257 has 16 divisors (see below), whose sum is σ = 138661632. Its totient is φ = 106587520.

The previous prime is 122126239. The next prime is 122126261. The reversal of 122126257 is 752621221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122126257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122126287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25173 + ... + 29629.

It is an arithmetic number, because the mean of its divisors is an integer number (8666352).

Almost surely, 2^122126257 is an apocalyptic number.

It is an amenable number.

122126257 is a deficient number, since it is larger than the sum of its proper divisors (16535375).

122126257 is a wasteful number, since it uses less digits than its factorization.

122126257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568.

The product of its digits is 3360, while the sum is 28.

The square root of 122126257 is about 11051.0749250921. The cubic root of 122126257 is about 496.1385985918.

Adding to 122126257 its reverse (752621221), we get a palindrome (874747478).

The spelling of 122126257 in words is "one hundred twenty-two million, one hundred twenty-six thousand, two hundred fifty-seven".