2145312124 has 6 divisors (see below), whose sum is σ = 3754296224. Its totient is φ = 1072656060.

The previous prime is 2145312121. The next prime is 2145312131. The reversal of 2145312124 is 4212135412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145312121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268164012 + ... + 268164019.

Almost surely, 2^2145312124 is an apocalyptic number.

It is an amenable number.

2145312124 is a deficient number, since it is larger than the sum of its proper divisors (1608984100).

2145312124 is a wasteful number, since it uses less digits than its factorization.

2145312124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536328035 (or 536328033 counting only the distinct ones).

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

The square root of 2145312124 is about 46317.5142251827. The cubic root of 2145312124 is about 1289.7241410815.

Adding to 2145312124 its reverse (4212135412), we get a palindrome (6357447536).

The spelling of 2145312124 in words is "two billion, one hundred forty-five million, three hundred twelve thousand, one hundred twenty-four".