122721952 has 12 divisors (see below), whose sum is σ = 241608906. Its totient is φ = 61360960.

The previous prime is 122721899. The next prime is 122721953. The reversal of 122721952 is 259127221.

It can be written as a sum of positive squares in only one way, i.e., 91317136 + 31404816 = 9556^2 + 5604^2 .

It is not an unprimeable number, because it can be changed into a prime (122721953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1917499 + ... + 1917562.

Almost surely, 2^122721952 is an apocalyptic number.

It is an amenable number.

122721952 is a deficient number, since it is larger than the sum of its proper divisors (118886954).

122721952 is an equidigital number, since it uses as much as digits as its factorization.

122721952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835071 (or 3835063 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 122721952 is about 11077.9940422443. The cubic root of 122721952 is about 496.9439619853.

The spelling of 122721952 in words is "one hundred twenty-two million, seven hundred twenty-one thousand, nine hundred fifty-two".