12530401 has 4 divisors (see below), whose sum is σ = 13494292. Its totient is φ = 11566512.

The previous prime is 12530393. The next prime is 12530429. The reversal of 12530401 is 10403521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4004001 + 8526400 = 2001^2 + 2920^2 .

It is a cyclic number.

It is not a de Polignac number, because 12530401 - 2³ = 12530393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12530471) 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, 481926 + ... + 481951.

It is an arithmetic number, because the mean of its divisors is an integer number (3373573).

Almost surely, 2^12530401 is an apocalyptic number.

It is an amenable number.

12530401 is a deficient number, since it is larger than the sum of its proper divisors (963891).

12530401 is an equidigital number, since it uses as much as digits as its factorization.

12530401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963890.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12530401 is about 3539.8306456665. The cubic root of 12530401 is about 232.2674346145.

Adding to 12530401 its reverse (10403521), we get a palindrome (22933922).

The spelling of 12530401 in words is "twelve million, five hundred thirty thousand, four hundred one".