1803123 has 12 divisors (see below), whose sum is σ = 2976688. Its totient is φ = 1030320.

The previous prime is 1803103. The next prime is 1803127. The reversal of 1803123 is 3213081.

It is not a de Polignac number, because 1803123 - 2⁶ = 1803059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1803096 and 1803105.

It is not an unprimeable number, because it can be changed into a prime (1803127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14248 + ... + 14373.

2^1803123 is an apocalyptic number.

1803123 is a deficient number, since it is larger than the sum of its proper divisors (1173565).

1803123 is a wasteful number, since it uses less digits than its factorization.

1803123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28634 (or 28631 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1803123 is about 1342.8041554895. The cubic root of 1803123 is about 121.7143500675.

The spelling of 1803123 in words is "one million, eight hundred three thousand, one hundred twenty-three".