1120123403 has 16 divisors (see below), whose sum is σ = 1353676800. Its totient is φ = 906465600.

The previous prime is 1120123369. The next prime is 1120123409. The reversal of 1120123403 is 3043210211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120123403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1120123409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54053 + ... + 71846.

It is an arithmetic number, because the mean of its divisors is an integer number (84604800).

Almost surely, 2^1120123403 is an apocalyptic number.

1120123403 is a deficient number, since it is larger than the sum of its proper divisors (233553397).

1120123403 is a wasteful number, since it uses less digits than its factorization.

1120123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125978.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1120123403 is about 33468.2446955319. The cubic root of 1120123403 is about 1038.5369600022.

Adding to 1120123403 its reverse (3043210211), we get a palindrome (4163333614).

The spelling of 1120123403 in words is "one billion, one hundred twenty million, one hundred twenty-three thousand, four hundred three".