123412403 has 2 divisors, whose sum is σ = 123412404. Its totient is φ = 123412402.

The previous prime is 123412397. The next prime is 123412417. The reversal of 123412403 is 304214321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123412403 - 2⁶ = 123412339 is a prime.

It is not a weakly prime, because it can be changed into another prime (123412453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61706201 + 61706202.

It is an arithmetic number, because the mean of its divisors is an integer number (61706202).

Almost surely, 2^123412403 is an apocalyptic number.

123412403 is a deficient number, since it is larger than the sum of its proper divisors (1).

123412403 is an equidigital number, since it uses as much as digits as its factorization.

123412403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123412403 is about 11109.1135109873. The cubic root of 123412403 is about 497.8741785757.

Adding to 123412403 its reverse (304214321), we get a palindrome (427626724).

The spelling of 123412403 in words is "one hundred twenty-three million, four hundred twelve thousand, four hundred three".