2145140412 has 12 divisors (see below), whose sum is σ = 5005327656. Its totient is φ = 715046800.

The previous prime is 2145140401. The next prime is 2145140419. The reversal of 2145140412 is 2140415412.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145140419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89380839 + ... + 89380862.

It is an arithmetic number, because the mean of its divisors is an integer number (417110638).

Almost surely, 2^2145140412 is an apocalyptic number.

It is an amenable number.

2145140412 is an abundant number, since it is smaller than the sum of its proper divisors (2860187244).

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

2145140412 is a wasteful number, since it uses less digits than its factorization.

2145140412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178761708 (or 178761706 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 2145140412 is about 46315.6605480263. The cubic root of 2145140412 is about 1289.6897300793.

Adding to 2145140412 its reverse (2140415412), we get a palindrome (4285555824).

The spelling of 2145140412 in words is "two billion, one hundred forty-five million, one hundred forty thousand, four hundred twelve".