2142543544 has 8 divisors (see below), whose sum is σ = 4017269160. Its totient is φ = 1071271768.

The previous prime is 2142543527. The next prime is 2142543553. The reversal of 2142543544 is 4453452412.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133908964 + ... + 133908979.

It is an arithmetic number, because the mean of its divisors is an integer number (502158645).

Almost surely, 2^2142543544 is an apocalyptic number.

It is an amenable number.

2142543544 is a deficient number, since it is larger than the sum of its proper divisors (1874725616).

2142543544 is a wasteful number, since it uses less digits than its factorization.

2142543544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267817949 (or 267817945 counting only the distinct ones).

The product of its digits is 76800, while the sum is 34.

The square root of 2142543544 is about 46287.6176098965. The cubic root of 2142543544 is about 1289.1690949489.

Adding to 2142543544 its reverse (4453452412), we get a palindrome (6595995956).

The spelling of 2142543544 in words is "two billion, one hundred forty-two million, five hundred forty-three thousand, five hundred forty-four".