12145142 has 32 divisors (see below), whose sum is σ = 20217600. Its totient is φ = 5449248.

The previous prime is 12145103. The next prime is 12145151. The reversal of 12145142 is 24154121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113453 + ... + 113559.

It is an arithmetic number, because the mean of its divisors is an integer number (631800).

Almost surely, 2^12145142 is an apocalyptic number.

12145142 is a deficient number, since it is larger than the sum of its proper divisors (8072458).

12145142 is a wasteful number, since it uses less digits than its factorization.

12145142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260.

The product of its digits is 320, while the sum is 20.

The square root of 12145142 is about 3484.9880918017. The cubic root of 12145142 is about 229.8621858704.

Adding to 12145142 its reverse (24154121), we get a palindrome (36299263).

The spelling of 12145142 in words is "twelve million, one hundred forty-five thousand, one hundred forty-two".