12540322 has 8 divisors (see below), whose sum is σ = 19917036. Its totient is φ = 5901312.

The previous prime is 12540317. The next prime is 12540329. The reversal of 12540322 is 22304521.

It can be written as a sum of positive squares in 2 ways, for example, as 12467961 + 72361 = 3531^2 + 269^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12540322.

It is not an unprimeable number, because it can be changed into a prime (12540329) 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, 184383 + ... + 184450.

Almost surely, 2^12540322 is an apocalyptic number.

12540322 is a deficient number, since it is larger than the sum of its proper divisors (7376714).

12540322 is a wasteful number, since it uses less digits than its factorization.

12540322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368852.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12540322 is about 3541.2317066241. The cubic root of 12540322 is about 232.3287180305.

Adding to 12540322 its reverse (22304521), we get a palindrome (34844843).

The spelling of 12540322 in words is "twelve million, five hundred forty thousand, three hundred twenty-two".