120168091 has 2 divisors, whose sum is σ = 120168092. Its totient is φ = 120168090.

The previous prime is 120168079. The next prime is 120168107. The reversal of 120168091 is 190861021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120168091 - 2⁷ = 120167963 is a prime.

It is a Chen prime.

It is equal to p_6850711 and since 120168091 and 6850711 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 (120163091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60084045 + 60084046.

It is an arithmetic number, because the mean of its divisors is an integer number (60084046).

Almost surely, 2^120168091 is an apocalyptic number.

120168091 is the 5860-th centered heptagonal number.

120168091 is a deficient number, since it is larger than the sum of its proper divisors (1).

120168091 is an equidigital number, since it uses as much as digits as its factorization.

120168091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 120168091 is about 10962.1207346024. The cubic root of 120168091 is about 493.4726118904.

The spelling of 120168091 in words is "one hundred twenty million, one hundred sixty-eight thousand, ninety-one".