120421023 has 4 divisors (see below), whose sum is σ = 160561368. Its totient is φ = 80280680.

The previous prime is 120421001. The next prime is 120421033. The reversal of 120421023 is 320124021.

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 120421023 - 2⁵ = 120420991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120420993 and 120421011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120421033) 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, 20070168 + ... + 20070173.

It is an arithmetic number, because the mean of its divisors is an integer number (40140342).

Almost surely, 2^120421023 is an apocalyptic number.

120421023 is a deficient number, since it is larger than the sum of its proper divisors (40140345).

120421023 is an equidigital number, since it uses as much as digits as its factorization.

120421023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40140344.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 120421023 is about 10973.6513066527. The cubic root of 120421023 is about 493.8185926604.

Adding to 120421023 its reverse (320124021), we get a palindrome (440545044).

The spelling of 120421023 in words is "one hundred twenty million, four hundred twenty-one thousand, twenty-three".