120423111 has 4 divisors (see below), whose sum is σ = 160564152. Its totient is φ = 80282072.

The previous prime is 120423077. The next prime is 120423113. The reversal of 120423111 is 111324021.

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

It is a cyclic number.

It is not a de Polignac number, because 120423111 - 2¹³ = 120414919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120423113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20070516 + ... + 20070521.

It is an arithmetic number, because the mean of its divisors is an integer number (40141038).

Almost surely, 2^120423111 is an apocalyptic number.

120423111 is a deficient number, since it is larger than the sum of its proper divisors (40141041).

120423111 is an equidigital number, since it uses as much as digits as its factorization.

120423111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40141040.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 120423111 is about 10973.7464432162. The cubic root of 120423111 is about 493.8214467779.

Adding to 120423111 its reverse (111324021), we get a palindrome (231747132).

The spelling of 120423111 in words is "one hundred twenty million, four hundred twenty-three thousand, one hundred eleven".