123534401 has 2 divisors, whose sum is σ = 123534402. Its totient is φ = 123534400.

The previous prime is 123534347. The next prime is 123534421. The reversal of 123534401 is 104435321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119924401 + 3610000 = 10951^2 + 1900^2 .

It is an emirp because it is prime and its reverse (104435321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123534401 is a prime.

It is not a weakly prime, because it can be changed into another prime (123534421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61767200 + 61767201.

It is an arithmetic number, because the mean of its divisors is an integer number (61767201).

Almost surely, 2^123534401 is an apocalyptic number.

It is an amenable number.

123534401 is a deficient number, since it is larger than the sum of its proper divisors (1).

123534401 is an equidigital number, since it uses as much as digits as its factorization.

123534401 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 123534401 is about 11114.6030518413. The cubic root of 123534401 is about 498.0381805966.

Adding to 123534401 its reverse (104435321), we get a palindrome (227969722).

The spelling of 123534401 in words is "one hundred twenty-three million, five hundred thirty-four thousand, four hundred one".