123533403 has 16 divisors (see below), whose sum is σ = 190108416. Its totient is φ = 69890400.

The previous prime is 123533401. The next prime is 123533411. The reversal of 123533403 is 304335321.

It is a happy number.

It is not a de Polignac number, because 123533403 - 2¹ = 123533401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123533401) 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 in 15 ways as a sum of consecutive naturals, for example, 27001 + ... + 31242.

It is an arithmetic number, because the mean of its divisors is an integer number (11881776).

Almost surely, 2^123533403 is an apocalyptic number.

123533403 is a deficient number, since it is larger than the sum of its proper divisors (66575013).

123533403 is a wasteful number, since it uses less digits than its factorization.

123533403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58354.

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 123533403 is about 11114.5581558603. The cubic root of 123533403 is about 498.0368394225.

Adding to 123533403 its reverse (304335321), we get a palindrome (427868724).

The spelling of 123533403 in words is "one hundred twenty-three million, five hundred thirty-three thousand, four hundred three".