12450401 has 4 divisors (see below), whose sum is σ = 12459972. Its totient is φ = 12440832.

The previous prime is 12450397. The next prime is 12450419. The reversal of 12450401 is 10405421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10405421 = 13 ⋅800417.

It can be written as a sum of positive squares in 2 ways, for example, as 3900625 + 8549776 = 1975^2 + 2924^2 .

It is a cyclic number.

It is not a de Polignac number, because 12450401 - 2² = 12450397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12450401.

It is not an unprimeable number, because it can be changed into a prime (12450421) 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, 2456 + ... + 5561.

It is an arithmetic number, because the mean of its divisors is an integer number (3114993).

Almost surely, 2^12450401 is an apocalyptic number.

It is an amenable number.

12450401 is a deficient number, since it is larger than the sum of its proper divisors (9571).

12450401 is an equidigital number, since it uses as much as digits as its factorization.

12450401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12450401 is about 3528.5125761431. The cubic root of 12450401 is about 231.7720772362.

Adding to 12450401 its reverse (10405421), we get a palindrome (22855822).

The spelling of 12450401 in words is "twelve million, four hundred fifty thousand, four hundred one".