120239621 has 2 divisors, whose sum is σ = 120239622. Its totient is φ = 120239620.

The previous prime is 120239569. The next prime is 120239633. The reversal of 120239621 is 126932021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120143521 + 96100 = 10961^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 120239621 - 2¹⁰ = 120238597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120239641) 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, 60119810 + 60119811.

It is an arithmetic number, because the mean of its divisors is an integer number (60119811).

Almost surely, 2^120239621 is an apocalyptic number.

It is an amenable number.

120239621 is a deficient number, since it is larger than the sum of its proper divisors (1).

120239621 is an equidigital number, since it uses as much as digits as its factorization.

120239621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 120239621 is about 10965.3828478535. The cubic root of 120239621 is about 493.5705055831.

The spelling of 120239621 in words is "one hundred twenty million, two hundred thirty-nine thousand, six hundred twenty-one".