12143634 has 32 divisors (see below), whose sum is σ = 25410240. Its totient is φ = 3864000.

The previous prime is 12143633. The next prime is 12143639. The reversal of 12143634 is 43634121.

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 (12143633) 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, 17229 + ... + 17919.

It is an arithmetic number, because the mean of its divisors is an integer number (794070).

Almost surely, 2^12143634 is an apocalyptic number.

12143634 is an abundant number, since it is smaller than the sum of its proper divisors (13266606).

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

12143634 is a wasteful number, since it uses less digits than its factorization.

12143634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826.

The product of its digits is 1728, while the sum is 24.

The square root of 12143634 is about 3484.7717285355. The cubic root of 12143634 is about 229.8526718737.

Adding to 12143634 its reverse (43634121), we get a palindrome (55777755).

The spelling of 12143634 in words is "twelve million, one hundred forty-three thousand, six hundred thirty-four".