2642857123 has 2 divisors, whose sum is σ = 2642857124. Its totient is φ = 2642857122.

The previous prime is 2642857109. The next prime is 2642857177. The reversal of 2642857123 is 3217582462.

2642857123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2642857123 - 2⁹ = 2642856611 is a prime.

It is not a weakly prime, because it can be changed into another prime (2642857103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321428561 + 1321428562.

It is an arithmetic number, because the mean of its divisors is an integer number (1321428562).

Almost surely, 2^2642857123 is an apocalyptic number.

2642857123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642857123 is an equidigital number, since it uses as much as digits as its factorization.

2642857123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 2642857123 is about 51408.7261367173. The cubic root of 2642857123 is about 1382.5830503166.

The spelling of 2642857123 in words is "two billion, six hundred forty-two million, eight hundred fifty-seven thousand, one hundred twenty-three".