2042878723 has 2 divisors, whose sum is σ = 2042878724. Its totient is φ = 2042878722.

The previous prime is 2042878687. The next prime is 2042878741. The reversal of 2042878723 is 3278782402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2042878723 is a prime.

It is a super-2 number, since 2×2042878723² = 8346706953772221458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2042878723.

It is not a weakly prime, because it can be changed into another prime (2042878753) 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, 1021439361 + 1021439362.

It is an arithmetic number, because the mean of its divisors is an integer number (1021439362).

Almost surely, 2^2042878723 is an apocalyptic number.

2042878723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042878723 is an equidigital number, since it uses as much as digits as its factorization.

2042878723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 2042878723 is about 45198.2159271801. The cubic root of 2042878723 is about 1268.8614267026.

The spelling of 2042878723 in words is "two billion, forty-two million, eight hundred seventy-eight thousand, seven hundred twenty-three".