120840423 has 8 divisors (see below), whose sum is σ = 175767936. Its totient is φ = 73236600.

The previous prime is 120840389. The next prime is 120840427. The reversal of 120840423 is 324048021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120840423 - 2⁶ = 120840359 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 120840393 and 120840402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120840427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1830883 + ... + 1830948.

It is an arithmetic number, because the mean of its divisors is an integer number (21970992).

Almost surely, 2^120840423 is an apocalyptic number.

120840423 is a deficient number, since it is larger than the sum of its proper divisors (54927513).

120840423 is a wasteful number, since it uses less digits than its factorization.

120840423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661845.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 120840423 is about 10992.7441069098. The cubic root of 120840423 is about 494.3912156683.

Adding to 120840423 its reverse (324048021), we get a palindrome (444888444).

The spelling of 120840423 in words is "one hundred twenty million, eight hundred forty thousand, four hundred twenty-three".