122729997 has 24 divisors (see below), whose sum is σ = 179890464. Its totient is φ = 74378304.

The previous prime is 122729993. The next prime is 122730007. The reversal of 122729997 is 799927221.

It is not a de Polignac number, because 122729997 - 2² = 122729993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122729993) 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 23 ways as a sum of consecutive naturals, for example, 32163 + ... + 35775.

It is an arithmetic number, because the mean of its divisors is an integer number (7495436).

Almost surely, 2^122729997 is an apocalyptic number.

It is an amenable number.

122729997 is a deficient number, since it is larger than the sum of its proper divisors (57160467).

122729997 is a wasteful number, since it uses less digits than its factorization.

122729997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709 (or 3696 counting only the distinct ones).

The product of its digits is 285768, while the sum is 48.

The square root of 122729997 is about 11078.3571435480. The cubic root of 122729997 is about 496.9548207511.

The spelling of 122729997 in words is "one hundred twenty-two million, seven hundred twenty-nine thousand, nine hundred ninety-seven".