120077521 has 2 divisors, whose sum is σ = 120077522. Its totient is φ = 120077520.

The previous prime is 120077519. The next prime is 120077533. The reversal of 120077521 is 125770021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95277121 + 24800400 = 9761^2 + 4980^2 .

It is a cyclic number.

It is not a de Polignac number, because 120077521 - 2¹ = 120077519 is a prime.

It is a super-2 number, since 2×120077521² = 28837222099010882, which contains 22 as substring.

Together with 120077519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120077501) 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 as a sum of consecutive naturals, namely, 60038760 + 60038761.

It is an arithmetic number, because the mean of its divisors is an integer number (60038761).

Almost surely, 2^120077521 is an apocalyptic number.

It is an amenable number.

120077521 is a deficient number, since it is larger than the sum of its proper divisors (1).

120077521 is an equidigital number, since it uses as much as digits as its factorization.

120077521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 120077521 is about 10957.9889122046. The cubic root of 120077521 is about 493.3486049063.

The spelling of 120077521 in words is "one hundred twenty million, seventy-seven thousand, five hundred twenty-one".