120559421 has 2 divisors, whose sum is σ = 120559422. Its totient is φ = 120559420.

The previous prime is 120559381. The next prime is 120559423. The reversal of 120559421 is 124955021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99720196 + 20839225 = 9986^2 + 4565^2 .

It is a cyclic number.

It is not a de Polignac number, because 120559421 - 2¹⁰ = 120558397 is a prime.

Together with 120559423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120559423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60279710 + 60279711.

It is an arithmetic number, because the mean of its divisors is an integer number (60279711).

Almost surely, 2^120559421 is an apocalyptic number.

It is an amenable number.

120559421 is a deficient number, since it is larger than the sum of its proper divisors (1).

120559421 is an equidigital number, since it uses as much as digits as its factorization.

120559421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 120559421 is about 10979.9554188530. The cubic root of 120559421 is about 494.0076995636.

The spelling of 120559421 in words is "one hundred twenty million, five hundred fifty-nine thousand, four hundred twenty-one".