12520078 has 8 divisors (see below), whose sum is σ = 19018080. Its totient is φ = 6180720.

The previous prime is 12520051. The next prime is 12520091. The reversal of 12520078 is 87002521.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39463 + ... + 39778.

It is an arithmetic number, because the mean of its divisors is an integer number (2377260).

Almost surely, 2^12520078 is an apocalyptic number.

12520078 is a deficient number, since it is larger than the sum of its proper divisors (6498002).

12520078 is an equidigital number, since it uses as much as digits as its factorization.

12520078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79322.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 12520078 is about 3538.3722246253. The cubic root of 12520078 is about 232.2036336378.

Adding to 12520078 its reverse (87002521), we get a palindrome (99522599).

The spelling of 12520078 in words is "twelve million, five hundred twenty thousand, seventy-eight".