120401165 has 4 divisors (see below), whose sum is σ = 144481404. Its totient is φ = 96320928.

The previous prime is 120401147. The next prime is 120401189. The reversal of 120401165 is 561104021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561104021 = 23 ⋅24395827.

It can be written as a sum of positive squares in 2 ways, for example, as 27741289 + 92659876 = 5267^2 + 9626^2 .

It is a cyclic number.

It is not a de Polignac number, because 120401165 - 2⁸ = 120400909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12040112 + ... + 12040121.

It is an arithmetic number, because the mean of its divisors is an integer number (36120351).

Almost surely, 2^120401165 is an apocalyptic number.

It is an amenable number.

120401165 is a deficient number, since it is larger than the sum of its proper divisors (24080239).

120401165 is an equidigital number, since it uses as much as digits as its factorization.

120401165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24080238.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 120401165 is about 10972.7464656758. The cubic root of 120401165 is about 493.7914468225.

Adding to 120401165 its reverse (561104021), we get a palindrome (681505186).

The spelling of 120401165 in words is "one hundred twenty million, four hundred one thousand, one hundred sixty-five".