122729995 has 4 divisors (see below), whose sum is σ = 147276000. Its totient is φ = 98183992.

The previous prime is 122729993. The next prime is 122730007. The reversal of 122729995 is 599927221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 599927221 = 31 ⋅19352491.

It is a cyclic number.

It is not a de Polignac number, because 122729995 - 2¹ = 122729993 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 12272995 + ... + 12273004.

It is an arithmetic number, because the mean of its divisors is an integer number (36819000).

Almost surely, 2^122729995 is an apocalyptic number.

122729995 is a deficient number, since it is larger than the sum of its proper divisors (24546005).

122729995 is an equidigital number, since it uses as much as digits as its factorization.

122729995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24546004.

The product of its digits is 204120, while the sum is 46.

The square root of 122729995 is about 11078.3570532819. The cubic root of 122729995 is about 496.9548180516.

The spelling of 122729995 in words is "one hundred twenty-two million, seven hundred twenty-nine thousand, nine hundred ninety-five".