123202403 has 4 divisors (see below), whose sum is σ = 129686760. Its totient is φ = 116718048.

The previous prime is 123202381. The next prime is 123202423. The reversal of 123202403 is 304202321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304202321 = 2963 ⋅102667.

It is a cyclic number.

It is not a de Polignac number, because 123202403 - 2¹² = 123198307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123202423) 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, 3242150 + ... + 3242187.

It is an arithmetic number, because the mean of its divisors is an integer number (32421690).

Almost surely, 2^123202403 is an apocalyptic number.

123202403 is a deficient number, since it is larger than the sum of its proper divisors (6484357).

123202403 is an equidigital number, since it uses as much as digits as its factorization.

123202403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6484356.

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

The square root of 123202403 is about 11099.6577875176. The cubic root of 123202403 is about 497.5916220571.

Adding to 123202403 its reverse (304202321), we get a palindrome (427404724).

The spelling of 123202403 in words is "one hundred twenty-three million, two hundred two thousand, four hundred three".