12143402 has 16 divisors (see below), whose sum is σ = 19664640. Its totient is φ = 5606832.

The previous prime is 12143387. The next prime is 12143407. The reversal of 12143402 is 20434121.

12143402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12143407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3218 + ... + 5885.

It is an arithmetic number, because the mean of its divisors is an integer number (1229040).

Almost surely, 2^12143402 is an apocalyptic number.

12143402 is a deficient number, since it is larger than the sum of its proper divisors (7521238).

12143402 is a wasteful number, since it uses less digits than its factorization.

12143402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9157.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 12143402 is about 3484.7384406868. The cubic root of 12143402 is about 229.8512081119.

Adding to 12143402 its reverse (20434121), we get a palindrome (32577523).

The spelling of 12143402 in words is "twelve million, one hundred forty-three thousand, four hundred two".