122104557 has 16 divisors (see below), whose sum is σ = 191537280. Its totient is φ = 76614336.

The previous prime is 122104553. The next prime is 122104573. The reversal of 122104557 is 755401221.

122104557 is a `hidden beast` number, since 1 + 2 + 2 + 104 + 557 = 666.

It is not a de Polignac number, because 122104557 - 2² = 122104553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 122104557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122104553) 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, 132553 + ... + 133470.

It is an arithmetic number, because the mean of its divisors is an integer number (11971080).

Almost surely, 2^122104557 is an apocalyptic number.

122104557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

122104557 is a deficient number, since it is larger than the sum of its proper divisors (69432723).

122104557 is a wasteful number, since it uses less digits than its factorization.

122104557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266049 (or 266043 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 122104557 is about 11050.0930765311. The cubic root of 122104557 is about 496.1092113943.

Adding to 122104557 its reverse (755401221), we get a palindrome (877505778).

The spelling of 122104557 in words is "one hundred twenty-two million, one hundred four thousand, five hundred fifty-seven".