1403123 has 4 divisors (see below), whose sum is σ = 1407120. Its totient is φ = 1399128.

The previous prime is 1403113. The next prime is 1403137. The reversal of 1403123 is 3213041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1403123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1403098 and 1403107.

It is not an unprimeable number, because it can be changed into a prime (1403113) 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, 1415 + ... + 2192.

It is an arithmetic number, because the mean of its divisors is an integer number (351780).

2^1403123 is an apocalyptic number.

1403123 is a deficient number, since it is larger than the sum of its proper divisors (3997).

1403123 is an equidigital number, since it uses as much as digits as its factorization.

1403123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1403123 is about 1184.5349298353. The cubic root of 1403123 is about 111.9520149460.

Adding to 1403123 its reverse (3213041), we get a palindrome (4616164).

The spelling of 1403123 in words is "one million, four hundred three thousand, one hundred twenty-three".