10042861 has 2 divisors, whose sum is σ = 10042862. Its totient is φ = 10042860.

The previous prime is 10042847. The next prime is 10042867. The reversal of 10042861 is 16824001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9418761 + 624100 = 3069^2 + 790^2 .

It is an emirp because it is prime and its reverse (16824001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10042861 - 2¹⁷ = 9911789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10042867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5021430 + 5021431.

It is an arithmetic number, because the mean of its divisors is an integer number (5021431).

Almost surely, 2^10042861 is an apocalyptic number.

It is an amenable number.

10042861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10042861 is an equidigital number, since it uses as much as digits as its factorization.

10042861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 10042861 is about 3169.0473331902. The cubic root of 10042861 is about 215.7508343718.

Adding to 10042861 its reverse (16824001), we get a palindrome (26866862).

It can be divided in two parts, 100428 and 61, that added together give a square (100489 = 317²).

The spelling of 10042861 in words is "ten million, forty-two thousand, eight hundred sixty-one".