12143898 has 32 divisors (see below), whose sum is σ = 29064000. Its totient is φ = 3736368.

The previous prime is 12143891. The next prime is 12143927. The reversal of 12143898 is 89834121.

12143898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12143891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7948 + ... + 9351.

It is an arithmetic number, because the mean of its divisors is an integer number (908250).

Almost surely, 2^12143898 is an apocalyptic number.

12143898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12143898 is an abundant number, since it is smaller than the sum of its proper divisors (16920102).

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

12143898 is a wasteful number, since it uses less digits than its factorization.

12143898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17323 (or 17317 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 12143898 is about 3484.8096074248. The cubic root of 12143898 is about 229.8543375109.

It can be divided in two parts, 12143 and 898, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12143898 in words is "twelve million, one hundred forty-three thousand, eight hundred ninety-eight".