12490140 has 96 divisors (see below), whose sum is σ = 38384640. Its totient is φ = 3015936.

The previous prime is 12490103. The next prime is 12490147. The reversal of 12490140 is 4109421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12490147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52141 + ... + 52379.

It is an arithmetic number, because the mean of its divisors is an integer number (399840).

Almost surely, 2^12490140 is an apocalyptic number.

12490140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12490140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19192320).

12490140 is an abundant number, since it is smaller than the sum of its proper divisors (25894500).

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

12490140 is a wasteful number, since it uses less digits than its factorization.

12490140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12490140 is about 3534.1392162732. The cubic root of 12490140 is about 232.0184042078.

Adding to 12490140 its reverse (4109421), we get a palindrome (16599561).

The spelling of 12490140 in words is "twelve million, four hundred ninety thousand, one hundred forty".