120910819 has 4 divisors (see below), whose sum is σ = 124811200. Its totient is φ = 117010440.

The previous prime is 120910789. The next prime is 120910871. The reversal of 120910819 is 918019021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120910819 is a prime.

It is a super-2 number, since 2×120910819² = 29238852302501522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 3900349 = 120910819 / (1 + 2 + 0 + 9 + 1 + 0 + 8 + 1 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120910879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1950144 + ... + 1950205.

It is an arithmetic number, because the mean of its divisors is an integer number (31202800).

Almost surely, 2^120910819 is an apocalyptic number.

120910819 is a deficient number, since it is larger than the sum of its proper divisors (3900381).

120910819 is an equidigital number, since it uses as much as digits as its factorization.

120910819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900380.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 120910819 is about 10995.9455709821. The cubic root of 120910819 is about 494.4872001275.

The spelling of 120910819 in words is "one hundred twenty million, nine hundred ten thousand, eight hundred nineteen".