122684257 has 12 divisors (see below), whose sum is σ = 130757440. Its totient is φ = 115085376.

The previous prime is 122684201. The next prime is 122684293. The reversal of 122684257 is 752486221.

It is a happy number.

It is not a de Polignac number, because 122684257 - 2⁷ = 122684129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122684657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126388 + ... + 127354.

Almost surely, 2^122684257 is an apocalyptic number.

122684257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

122684257 is a deficient number, since it is larger than the sum of its proper divisors (8073183).

122684257 is an equidigital number, since it uses as much as digits as its factorization.

122684257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440 (or 1423 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 122684257 is about 11076.2925656557. The cubic root of 122684257 is about 496.8930767101.

The spelling of 122684257 in words is "one hundred twenty-two million, six hundred eighty-four thousand, two hundred fifty-seven".