2142244549 has 2 divisors, whose sum is σ = 2142244550. Its totient is φ = 2142244548.

The previous prime is 2142244519. The next prime is 2142244561. The reversal of 2142244549 is 9454422412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1352915524 + 789329025 = 36782^2 + 28095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142244549 - 2¹³ = 2142236357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142244519) by changing a digit.

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, 1071122274 + 1071122275.

It is an arithmetic number, because the mean of its divisors is an integer number (1071122275).

Almost surely, 2^2142244549 is an apocalyptic number.

It is an amenable number.

2142244549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142244549 is an equidigital number, since it uses as much as digits as its factorization.

2142244549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 37.

The square root of 2142244549 is about 46284.3877457615. The cubic root of 2142244549 is about 1289.1091236986.

The spelling of 2142244549 in words is "two billion, one hundred forty-two million, two hundred forty-four thousand, five hundred forty-nine".