120985919 has 2 divisors, whose sum is σ = 120985920. Its totient is φ = 120985918.

The previous prime is 120985871. The next prime is 120985951. The reversal of 120985919 is 919589021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120985919 - 2⁸ = 120985663 is a prime.

It is a super-2 number, since 2×120985919² = 29275185192549122, 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 120985919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120985979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60492959 + 60492960.

It is an arithmetic number, because the mean of its divisors is an integer number (60492960).

Almost surely, 2^120985919 is an apocalyptic number.

120985919 is a deficient number, since it is larger than the sum of its proper divisors (1).

120985919 is an equidigital number, since it uses as much as digits as its factorization.

120985919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 44.

The square root of 120985919 is about 10999.3599359235. The cubic root of 120985919 is about 494.5895573940.

The spelling of 120985919 in words is "one hundred twenty million, nine hundred eighty-five thousand, nine hundred nineteen".