12143874 has 16 divisors (see below), whose sum is σ = 24464160. Its totient is φ = 4018560.

The previous prime is 12143863. The next prime is 12143891. The reversal of 12143874 is 47834121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6447 + ... + 8114.

It is an arithmetic number, because the mean of its divisors is an integer number (1529010).

Almost surely, 2^12143874 is an apocalyptic number.

12143874 is an abundant number, since it is smaller than the sum of its proper divisors (12320286).

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

12143874 is a wasteful number, since it uses less digits than its factorization.

12143874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14705.

The product of its digits is 5376, while the sum is 30.

The square root of 12143874 is about 3484.8061639064. The cubic root of 12143874 is about 229.8541860903.

Adding to 12143874 its reverse (47834121), we get a palindrome (59977995).

The spelling of 12143874 in words is "twelve million, one hundred forty-three thousand, eight hundred seventy-four".