12143250 has 128 divisors (see below), whose sum is σ = 38638080. Its totient is φ = 2764800.

The previous prime is 12143237. The next prime is 12143251. The reversal of 12143250 is 5234121.

12143250 = 645² + 646² + ... + 672².

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

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47122 + ... + 47378.

It is an arithmetic number, because the mean of its divisors is an integer number (301860).

Almost surely, 2^12143250 is an apocalyptic number.

12143250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12143250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19319040).

12143250 is an abundant number, since it is smaller than the sum of its proper divisors (26494830).

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

12143250 is a wasteful number, since it uses less digits than its factorization.

12143250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12143250 is about 3484.7166312342. The cubic root of 12143250 is about 229.8502490855.

Adding to 12143250 its reverse (5234121), we get a palindrome (17377371).

The spelling of 12143250 in words is "twelve million, one hundred forty-three thousand, two hundred fifty".