123022403 has 4 divisors (see below), whose sum is σ = 140597040. Its totient is φ = 105447768.

The previous prime is 123022399. The next prime is 123022411. The reversal of 123022403 is 304220321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304220321 = 17 ⋅17895313.

It is a cyclic number.

It is not a de Polignac number, because 123022403 - 2² = 123022399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123022433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8787308 + ... + 8787321.

It is an arithmetic number, because the mean of its divisors is an integer number (35149260).

Almost surely, 2^123022403 is an apocalyptic number.

123022403 is a deficient number, since it is larger than the sum of its proper divisors (17574637).

123022403 is an equidigital number, since it uses as much as digits as its factorization.

123022403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17574636.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 123022403 is about 11091.5464656647. The cubic root of 123022403 is about 497.3491750906.

Adding to 123022403 its reverse (304220321), we get a palindrome (427242724).

The spelling of 123022403 in words is "one hundred twenty-three million, twenty-two thousand, four hundred three".