12501040 has 40 divisors (see below), whose sum is σ = 29216880. Its totient is φ = 4974336.

The previous prime is 12501019. The next prime is 12501043. The reversal of 12501040 is 4010521.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 12501040.

It is not an unprimeable number, because it can be changed into a prime (12501043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24306 + ... + 24814.

It is an arithmetic number, because the mean of its divisors is an integer number (730422).

Almost surely, 2^12501040 is an apocalyptic number.

12501040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12501040 is an abundant number, since it is smaller than the sum of its proper divisors (16715840).

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

12501040 is a wasteful number, since it uses less digits than its factorization.

12501040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 12501040 is about 3535.6809810841. The cubic root of 12501040 is about 232.0858778387.

Adding to 12501040 its reverse (4010521), we get a palindrome (16511561).

The spelling of 12501040 in words is "twelve million, five hundred one thousand, forty".