2144742239 has 2 divisors, whose sum is σ = 2144742240. Its totient is φ = 2144742238.

The previous prime is 2144742191. The next prime is 2144742277. The reversal of 2144742239 is 9322474412.

It is an a-pointer prime, because the next prime (2144742277) can be obtained adding 2144742239 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2144742239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144742539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072371119 + 1072371120.

It is an arithmetic number, because the mean of its divisors is an integer number (1072371120).

Almost surely, 2^2144742239 is an apocalyptic number.

2144742239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144742239 is an equidigital number, since it uses as much as digits as its factorization.

2144742239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 2144742239 is about 46311.3618780532. The cubic root of 2144742239 is about 1289.6099293350.

The spelling of 2144742239 in words is "two billion, one hundred forty-four million, seven hundred forty-two thousand, two hundred thirty-nine".