12520146 has 16 divisors (see below), whose sum is σ = 25075008. Its totient is φ = 4167600.

The previous prime is 12520127. The next prime is 12520159. The reversal of 12520146 is 64102521.

It is a super-2 number, since 2×12520146² = 313508111722632, which contains 22 as substring.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 7531 + ... + 9041.

It is an arithmetic number, because the mean of its divisors is an integer number (1567188).

Almost surely, 2^12520146 is an apocalyptic number.

12520146 is an abundant number, since it is smaller than the sum of its proper divisors (12554862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12520146 is a wasteful number, since it uses less digits than its factorization.

12520146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12520146 is about 3538.3818335505. The cubic root of 12520146 is about 232.2040540244.

Adding to 12520146 its reverse (64102521), we get a palindrome (76622667).

The spelling of 12520146 in words is "twelve million, five hundred twenty thousand, one hundred forty-six".