120276721 has 2 divisors, whose sum is σ = 120276722. Its totient is φ = 120276720.

The previous prime is 120276703. The next prime is 120276727. The reversal of 120276721 is 127672021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119596096 + 680625 = 10936^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 120276721 - 2¹¹ = 120274673 is a prime.

It is a super-2 number, since 2×120276721² = 28932979229023682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120276721.

It is not a weakly prime, because it can be changed into another prime (120276727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60138360 + 60138361.

It is an arithmetic number, because the mean of its divisors is an integer number (60138361).

Almost surely, 2^120276721 is an apocalyptic number.

It is an amenable number.

120276721 is a deficient number, since it is larger than the sum of its proper divisors (1).

120276721 is an equidigital number, since it uses as much as digits as its factorization.

120276721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 120276721 is about 10967.0744047809. The cubic root of 120276721 is about 493.6212641783.

The spelling of 120276721 in words is "one hundred twenty million, two hundred seventy-six thousand, seven hundred twenty-one".