120023403 has 4 divisors (see below), whose sum is σ = 160031208. Its totient is φ = 80015600.

The previous prime is 120023381. The next prime is 120023411. The reversal of 120023403 is 304320021.

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 120023403 - 2⁸ = 120023147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120023443) 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, 20003898 + ... + 20003903.

It is an arithmetic number, because the mean of its divisors is an integer number (40007802).

Almost surely, 2^120023403 is an apocalyptic number.

120023403 is a deficient number, since it is larger than the sum of its proper divisors (40007805).

120023403 is an equidigital number, since it uses as much as digits as its factorization.

120023403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40007804.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 120023403 is about 10955.5192939449. The cubic root of 120023403 is about 493.2744776492.

Adding to 120023403 its reverse (304320021), we get a palindrome (424343424).

The spelling of 120023403 in words is "one hundred twenty million, twenty-three thousand, four hundred three".