120011903 has 4 divisors (see below), whose sum is σ = 130922088. Its totient is φ = 109101720.

The previous prime is 120011893. The next prime is 120011917. The reversal of 120011903 is 309110021.

It is a happy number.

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 120011903 - 2¹² = 120007807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011963) 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, 5455076 + ... + 5455097.

It is an arithmetic number, because the mean of its divisors is an integer number (32730522).

Almost surely, 2^120011903 is an apocalyptic number.

120011903 is a deficient number, since it is larger than the sum of its proper divisors (10910185).

120011903 is a wasteful number, since it uses less digits than its factorization.

120011903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10910184.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 120011903 is about 10954.9944317649. The cubic root of 120011903 is about 493.2587228393.

Adding to 120011903 its reverse (309110021), we get a palindrome (429121924).

The spelling of 120011903 in words is "one hundred twenty million, eleven thousand, nine hundred three".