122904899 has 4 divisors (see below), whose sum is σ = 132359136. Its totient is φ = 113450664.

The previous prime is 122904877. The next prime is 122904907. The reversal of 122904899 is 998409221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998409221 = 37 ⋅26984033.

It is a cyclic number.

It is not a de Polignac number, because 122904899 - 2⁸ = 122904643 is a prime.

It is a super-2 number, since 2×122904899² = 30211228396400402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122904829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4727099 + ... + 4727124.

It is an arithmetic number, because the mean of its divisors is an integer number (33089784).

Almost surely, 2^122904899 is an apocalyptic number.

122904899 is a deficient number, since it is larger than the sum of its proper divisors (9454237).

122904899 is an equidigital number, since it uses as much as digits as its factorization.

122904899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454236.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 122904899 is about 11086.2481931445. The cubic root of 122904899 is about 497.1907781042.

The spelling of 122904899 in words is "one hundred twenty-two million, nine hundred four thousand, eight hundred ninety-nine".