2145142312 has 16 divisors (see below), whose sum is σ = 4078792800. Its totient is φ = 1057464240.

The previous prime is 2145142271. The next prime is 2145142343. The reversal of 2145142312 is 2132415412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1887762 + ... + 1888897.

It is an arithmetic number, because the mean of its divisors is an integer number (254924550).

Almost surely, 2^2145142312 is an apocalyptic number.

It is an amenable number.

2145142312 is a deficient number, since it is larger than the sum of its proper divisors (1933650488).

2145142312 is a wasteful number, since it uses less digits than its factorization.

2145142312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776736 (or 3776732 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 2145142312 is about 46315.6810594425. The cubic root of 2145142312 is about 1289.6901108484.

Adding to 2145142312 its reverse (2132415412), we get a palindrome (4277557724).

The spelling of 2145142312 in words is "two billion, one hundred forty-five million, one hundred forty-two thousand, three hundred twelve".