120408091 has 2 divisors, whose sum is σ = 120408092. Its totient is φ = 120408090.

The previous prime is 120408089. The next prime is 120408121. The reversal of 120408091 is 190804021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120408091 - 2¹ = 120408089 is a prime.

Together with 120408089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120408191) 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, 60204045 + 60204046.

It is an arithmetic number, because the mean of its divisors is an integer number (60204046).

Almost surely, 2^120408091 is an apocalyptic number.

120408091 is a deficient number, since it is larger than the sum of its proper divisors (1).

120408091 is an equidigital number, since it uses as much as digits as its factorization.

120408091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 120408091 is about 10973.0620612480. The cubic root of 120408091 is about 493.8009149867.

The spelling of 120408091 in words is "one hundred twenty million, four hundred eight thousand, ninety-one".