122980005 has 32 divisors (see below), whose sum is σ = 219102720. Its totient is φ = 65448000.

The previous prime is 122980001. The next prime is 122980019. The reversal of 122980005 is 500089221.

It is not a de Polignac number, because 122980005 - 2² = 122980001 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122980001) 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 31 ways as a sum of consecutive naturals, for example, 100779 + ... + 101991.

It is an arithmetic number, because the mean of its divisors is an integer number (6846960).

Almost surely, 2^122980005 is an apocalyptic number.

122980005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122980005 is a deficient number, since it is larger than the sum of its proper divisors (96122715).

122980005 is a wasteful number, since it uses less digits than its factorization.

122980005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 122980005 is about 11089.6350255543. The cubic root of 122980005 is about 497.2920336468.

The spelling of 122980005 in words is "one hundred twenty-two million, nine hundred eighty thousand, five".