2145141243 has 48 divisors (see below), whose sum is σ = 3784734720. Its totient is φ = 1142846208.

The previous prime is 2145141233. The next prime is 2145141283. The reversal of 2145141243 is 3421415412.

2145141243 is a `hidden beast` number, since 21 + 4 + 514 + 124 + 3 = 666.

It is not a de Polignac number, because 2145141243 - 2⁹ = 2145140731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145141233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105238 + ... + 123956.

It is an arithmetic number, because the mean of its divisors is an integer number (78848640).

Almost surely, 2^2145141243 is an apocalyptic number.

2145141243 is a deficient number, since it is larger than the sum of its proper divisors (1639593477).

2145141243 is a wasteful number, since it uses less digits than its factorization.

2145141243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18856 (or 18853 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 2145141243 is about 46315.6695190731. The cubic root of 2145141243 is about 1289.6898966157.

Adding to 2145141243 its reverse (3421415412), we get a palindrome (5566556655).

The spelling of 2145141243 in words is "two billion, one hundred forty-five million, one hundred forty-one thousand, two hundred forty-three".