12500240 has 20 divisors (see below), whose sum is σ = 29063244. Its totient is φ = 5000064.

The previous prime is 12500231. The next prime is 12500251. The reversal of 12500240 is 4200521.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 11182336 = 1148^2 + 3344^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a plaindrome in base 13.

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, 78047 + ... + 78206.

Almost surely, 2^12500240 is an apocalyptic number.

12500240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12500240 is an abundant number, since it is smaller than the sum of its proper divisors (16563004).

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

12500240 is a wasteful number, since it uses less digits than its factorization.

12500240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156266 (or 156260 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 12500240 is about 3535.5678468953. The cubic root of 12500240 is about 232.0809269796.

Adding to 12500240 its reverse (4200521), we get a palindrome (16700761).

The spelling of 12500240 in words is "twelve million, five hundred thousand, two hundred forty".