120389881 has 2 divisors, whose sum is σ = 120389882. Its totient is φ = 120389880.

The previous prime is 120389839. The next prime is 120389911. The reversal of 120389881 is 188983021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116985856 + 3404025 = 10816^2 + 1845^2 .

It is a cyclic number.

It is not a de Polignac number, because 120389881 - 2⁹ = 120389369 is a prime.

It is a super-2 number, since 2×120389881² = 28987446894388322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_6862585 and since 120389881 and 6862585 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (120389281) 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, 60194940 + 60194941.

It is an arithmetic number, because the mean of its divisors is an integer number (60194941).

Almost surely, 2^120389881 is an apocalyptic number.

It is an amenable number.

120389881 is a deficient number, since it is larger than the sum of its proper divisors (1).

120389881 is an equidigital number, since it uses as much as digits as its factorization.

120389881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 120389881 is about 10972.2322706002. The cubic root of 120389881 is about 493.7760202919.

The spelling of 120389881 in words is "one hundred twenty million, three hundred eighty-nine thousand, eight hundred eighty-one".