2042170687 has 2 divisors, whose sum is σ = 2042170688. Its totient is φ = 2042170686.

The previous prime is 2042170661. The next prime is 2042170721. The reversal of 2042170687 is 7860712402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2042170687 is a prime.

It is a super-2 number, since 2×2042170687² = 8340922229684103938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042170187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021085343 + 1021085344.

It is an arithmetic number, because the mean of its divisors is an integer number (1021085344).

Almost surely, 2^2042170687 is an apocalyptic number.

2042170687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042170687 is an equidigital number, since it uses as much as digits as its factorization.

2042170687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 2042170687 is about 45190.3826826018. The cubic root of 2042170687 is about 1268.7148193081.

The spelling of 2042170687 in words is "two billion, forty-two million, one hundred seventy thousand, six hundred eighty-seven".