2142231243 has 4 divisors (see below), whose sum is σ = 2856308328. Its totient is φ = 1428154160.

The previous prime is 2142231239. The next prime is 2142231277. The reversal of 2142231243 is 3421322412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2142231243 - 2² = 2142231239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2142231643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357038538 + ... + 357038543.

It is an arithmetic number, because the mean of its divisors is an integer number (714077082).

Almost surely, 2^2142231243 is an apocalyptic number.

2142231243 is a deficient number, since it is larger than the sum of its proper divisors (714077085).

2142231243 is an equidigital number, since it uses as much as digits as its factorization.

2142231243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714077084.

The product of its digits is 2304, while the sum is 24.

The square root of 2142231243 is about 46284.2440037644. The cubic root of 2142231243 is about 1289.1064547034.

Adding to 2142231243 its reverse (3421322412), we get a palindrome (5563553655).

The spelling of 2142231243 in words is "two billion, one hundred forty-two million, two hundred thirty-one thousand, two hundred forty-three".