123541403 has 2 divisors, whose sum is σ = 123541404. Its totient is φ = 123541402.

The previous prime is 123541387. The next prime is 123541459. The reversal of 123541403 is 304145321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123541403 - 2⁴ = 123541387 is a prime.

It is not a weakly prime, because it can be changed into another prime (123501403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61770701 + 61770702.

It is an arithmetic number, because the mean of its divisors is an integer number (61770702).

Almost surely, 2^123541403 is an apocalyptic number.

123541403 is a deficient number, since it is larger than the sum of its proper divisors (1).

123541403 is an equidigital number, since it uses as much as digits as its factorization.

123541403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 123541403 is about 11114.9180383843. The cubic root of 123541403 is about 498.0475901145.

Adding to 123541403 its reverse (304145321), we get a palindrome (427686724).

The spelling of 123541403 in words is "one hundred twenty-three million, five hundred forty-one thousand, four hundred three".