120402403 has 24 divisors (see below), whose sum is σ = 140945040. Its totient is φ = 101808000.

The previous prime is 120402371. The next prime is 120402427. The reversal of 120402403 is 304204021.

It is not a de Polignac number, because 120402403 - 2⁵ = 120402371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120402463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1192053 + ... + 1192153.

It is an arithmetic number, because the mean of its divisors is an integer number (5872710).

Almost surely, 2^120402403 is an apocalyptic number.

120402403 is a deficient number, since it is larger than the sum of its proper divisors (20542637).

120402403 is a wasteful number, since it uses less digits than its factorization.

120402403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 120402403 is about 10972.8028780253. The cubic root of 120402403 is about 493.7931392527.

Adding to 120402403 its reverse (304204021), we get a palindrome (424606424).

The spelling of 120402403 in words is "one hundred twenty million, four hundred two thousand, four hundred three".