123402033 has 6 divisors (see below), whose sum is σ = 178247394. Its totient is φ = 82268016.

The previous prime is 123402023. The next prime is 123402043. The reversal of 123402033 is 330204321.

It is an interprime number because it is at equal distance from previous prime (123402023) and next prime (123402043).

It can be written as a sum of positive squares in only one way, i.e., 118526769 + 4875264 = 10887^2 + 2208^2 .

It is not a de Polignac number, because 123402033 - 2¹⁶ = 123336497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123401997 and 123402015.

It is not an unprimeable number, because it can be changed into a prime (123402023) 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 5 ways as a sum of consecutive naturals, for example, 6855660 + ... + 6855677.

It is an arithmetic number, because the mean of its divisors is an integer number (29707899).

Almost surely, 2^123402033 is an apocalyptic number.

It is an amenable number.

123402033 is a deficient number, since it is larger than the sum of its proper divisors (54845361).

123402033 is a wasteful number, since it uses less digits than its factorization.

123402033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13711343 (or 13711340 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 123402033 is about 11108.6467672710. The cubic root of 123402033 is about 497.8602331922.

Adding to 123402033 its reverse (330204321), we get a palindrome (453606354).

The spelling of 123402033 in words is "one hundred twenty-three million, four hundred two thousand, thirty-three".