123504401 has 2 divisors, whose sum is σ = 123504402. Its totient is φ = 123504400.

The previous prime is 123504397. The next prime is 123504421. The reversal of 123504401 is 104405321.

It is an a-pointer prime, because the next prime (123504421) can be obtained adding 123504401 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73942801 + 49561600 = 8599^2 + 7040^2 .

It is an emirp because it is prime and its reverse (104405321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123504401 - 2² = 123504397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (123504421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61752200 + 61752201.

It is an arithmetic number, because the mean of its divisors is an integer number (61752201).

Almost surely, 2^123504401 is an apocalyptic number.

It is an amenable number.

123504401 is a deficient number, since it is larger than the sum of its proper divisors (1).

123504401 is an equidigital number, since it uses as much as digits as its factorization.

123504401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 123504401 is about 11113.2533940336. The cubic root of 123504401 is about 497.9978615844.

Adding to 123504401 its reverse (104405321), we get a palindrome (227909722).

The spelling of 123504401 in words is "one hundred twenty-three million, five hundred four thousand, four hundred one".