123200401 has 4 divisors (see below), whose sum is σ = 124099812. Its totient is φ = 122300992.

The previous prime is 123200383. The next prime is 123200431. The reversal of 123200401 is 104002321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104002321 = 2999 ⋅34679.

It can be written as a sum of positive squares in 2 ways, for example, as 27552001 + 95648400 = 5249^2 + 9780^2 .

It is a cyclic number.

It is not a de Polignac number, because 123200401 - 2¹¹ = 123198353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123200431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449500 + ... + 449773.

It is an arithmetic number, because the mean of its divisors is an integer number (31024953).

Almost surely, 2^123200401 is an apocalyptic number.

It is an amenable number.

123200401 is a deficient number, since it is larger than the sum of its proper divisors (899411).

123200401 is an equidigital number, since it uses as much as digits as its factorization.

123200401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899410.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 123200401 is about 11099.5676041907. The cubic root of 123200401 is about 497.5889268071.

Adding to 123200401 its reverse (104002321), we get a palindrome (227202722).

The spelling of 123200401 in words is "one hundred twenty-three million, two hundred thousand, four hundred one".