123400033 has 4 divisors (see below), whose sum is σ = 123429040. Its totient is φ = 123371028.

The previous prime is 123400027. The next prime is 123400049. The reversal of 123400033 is 330004321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 330004321 = 1667 ⋅197963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123400033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123400073) 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 3 ways as a sum of consecutive naturals, for example, 6735 + ... + 17092.

It is an arithmetic number, because the mean of its divisors is an integer number (30857260).

Almost surely, 2^123400033 is an apocalyptic number.

It is an amenable number.

123400033 is a deficient number, since it is larger than the sum of its proper divisors (29007).

123400033 is an equidigital number, since it uses as much as digits as its factorization.

123400033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29006.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 123400033 is about 11108.5567469406. The cubic root of 123400033 is about 497.8575435395.

Adding to 123400033 its reverse (330004321), we get a palindrome (453404354).

The spelling of 123400033 in words is "one hundred twenty-three million, four hundred thousand, thirty-three".