12143458 has 16 divisors (see below), whose sum is σ = 18738720. Its totient is φ = 5898816.

The previous prime is 12143447. The next prime is 12143459. The reversal of 12143458 is 85434121.

12143458 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 not an unprimeable number, because it can be changed into a prime (12143459) 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, 28773 + ... + 29191.

It is an arithmetic number, because the mean of its divisors is an integer number (1171170).

Almost surely, 2^12143458 is an apocalyptic number.

12143458 is a deficient number, since it is larger than the sum of its proper divisors (6595262).

12143458 is a wasteful number, since it uses less digits than its factorization.

12143458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its digits is 3840, while the sum is 28.

The square root of 12143458 is about 3484.7464757138. The cubic root of 12143458 is about 229.8515614354.

Adding to 12143458 its reverse (85434121), we get a palindrome (97577579).

The spelling of 12143458 in words is "twelve million, one hundred forty-three thousand, four hundred fifty-eight".