2124543242 has 4 divisors (see below), whose sum is σ = 3186814866. Its totient is φ = 1062271620.

The previous prime is 2124543221. The next prime is 2124543257. The reversal of 2124543242 is 2423454212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2121615721 + 2927521 = 46061^2 + 1711^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531135809 + ... + 531135812.

Almost surely, 2^2124543242 is an apocalyptic number.

2124543242 is a deficient number, since it is larger than the sum of its proper divisors (1062271624).

2124543242 is a wasteful number, since it uses less digits than its factorization.

2124543242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062271623.

The product of its digits is 15360, while the sum is 29.

The square root of 2124543242 is about 46092.7677841112. The cubic root of 2124543242 is about 1285.5486747335.

Adding to 2124543242 its reverse (2423454212), we get a palindrome (4547997454).

It can be divided in two parts, 212 and 4543242, that added together give a palindrome (4543454).

The spelling of 2124543242 in words is "two billion, one hundred twenty-four million, five hundred forty-three thousand, two hundred forty-two".