2840142761 has 2 divisors, whose sum is σ = 2840142762. Its totient is φ = 2840142760.

The previous prime is 2840142731. The next prime is 2840142763. The reversal of 2840142761 is 1672410482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2695686400 + 144456361 = 51920^2 + 12019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2840142761 is a prime.

Together with 2840142763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2840142763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420071380 + 1420071381.

It is an arithmetic number, because the mean of its divisors is an integer number (1420071381).

Almost surely, 2^2840142761 is an apocalyptic number.

It is an amenable number.

2840142761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840142761 is an equidigital number, since it uses as much as digits as its factorization.

2840142761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2840142761 is about 53292.9897922794. The cubic root of 2840142761 is about 1416.1634786371.

The spelling of 2840142761 in words is "two billion, eight hundred forty million, one hundred forty-two thousand, seven hundred sixty-one".