2145238143 has 16 divisors (see below), whose sum is σ = 3032789760. Its totient is φ = 1344157056.

The previous prime is 2145238063. The next prime is 2145238189. The reversal of 2145238143 is 3418325412.

It is not a de Polignac number, because 2145238143 - 2¹⁸ = 2144975999 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145238243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8148 + ... + 66006.

It is an arithmetic number, because the mean of its divisors is an integer number (189549360).

Almost surely, 2^2145238143 is an apocalyptic number.

2145238143 is a deficient number, since it is larger than the sum of its proper divisors (887551617).

2145238143 is a wasteful number, since it uses less digits than its factorization.

2145238143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58606.

The product of its digits is 23040, while the sum is 33.

The square root of 2145238143 is about 46316.7155895148. The cubic root of 2145238143 is about 1289.7093155498.

It can be divided in two parts, 21452 and 38143, that added together give a palindrome (59595).

The spelling of 2145238143 in words is "two billion, one hundred forty-five million, two hundred thirty-eight thousand, one hundred forty-three".