2042170723 has 2 divisors, whose sum is σ = 2042170724. Its totient is φ = 2042170722.

The previous prime is 2042170721. The next prime is 2042170729. The reversal of 2042170723 is 3270712402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2042170723 - 2¹ = 2042170721 is a prime.

It is a super-2 number, since 2×2042170723² = 8340922523756685458, which contains 22 as substring.

Together with 2042170721, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2042170691 and 2042170700.

It is not a weakly prime, because it can be changed into another prime (2042170721) 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, 1021085361 + 1021085362.

It is an arithmetic number, because the mean of its divisors is an integer number (1021085362).

Almost surely, 2^2042170723 is an apocalyptic number.

2042170723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042170723 is an equidigital number, since it uses as much as digits as its factorization.

2042170723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 2042170723 is about 45190.3830809167. The cubic root of 2042170723 is about 1268.7148267632.

The spelling of 2042170723 in words is "two billion, forty-two million, one hundred seventy thousand, seven hundred twenty-three".