12550140 has 120 divisors (see below), whose sum is σ = 40330752. Its totient is φ = 3265920.

The previous prime is 12550123. The next prime is 12550147. The reversal of 12550140 is 4105521.

12550140 is a `hidden beast` number, since 125 + 501 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550147) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 98757 + ... + 98883.

Almost surely, 2^12550140 is an apocalyptic number.

12550140 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 12550140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20165376).

12550140 is an abundant number, since it is smaller than the sum of its proper divisors (27780612).

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

12550140 is a wasteful number, since it uses less digits than its factorization.

12550140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12550140 is about 3542.6176762389. The cubic root of 12550140 is about 232.3893333889.

Adding to 12550140 its reverse (4105521), we get a palindrome (16655661).

The spelling of 12550140 in words is "twelve million, five hundred fifty thousand, one hundred forty".