42358861 has 2 divisors, whose sum is σ = 42358862. Its totient is φ = 42358860.

The previous prime is 42358843. The next prime is 42358867. The reversal of 42358861 is 16885324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41538025 + 820836 = 6445^2 + 906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42358861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42358861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42358867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21179430 + 21179431.

It is an arithmetic number, because the mean of its divisors is an integer number (21179431).

Almost surely, 2^42358861 is an apocalyptic number.

It is an amenable number.

42358861 is a deficient number, since it is larger than the sum of its proper divisors (1).

42358861 is an equidigital number, since it uses as much as digits as its factorization.

42358861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 42358861 is about 6508.3685359697. The cubic root of 42358861 is about 348.5898664039.

The spelling of 42358861 in words is "forty-two million, three hundred fifty-eight thousand, eight hundred sixty-one".