42458861 has 4 divisors (see below), whose sum is σ = 42504924. Its totient is φ = 42412800.

The previous prime is 42458849. The next prime is 42458873. The reversal of 42458861 is 16885424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42458849) and next prime (42458873).

It can be written as a sum of positive squares in 2 ways, for example, as 11600836 + 30858025 = 3406^2 + 5555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42458861 is a prime.

It is a deceptive number, since it divides R_42458860.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42458831) 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 in 3 ways as a sum of consecutive naturals, for example, 21620 + ... + 23501.

It is an arithmetic number, because the mean of its divisors is an integer number (10626231).

Almost surely, 2^42458861 is an apocalyptic number.

It is an amenable number.

42458861 is a deficient number, since it is larger than the sum of its proper divisors (46063).

42458861 is an equidigital number, since it uses as much as digits as its factorization.

42458861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46062.

The product of its digits is 61440, while the sum is 38.

The square root of 42458861 is about 6516.0464240212. The cubic root of 42458861 is about 348.8639656144.

The spelling of 42458861 in words is "forty-two million, four hundred fifty-eight thousand, eight hundred sixty-one".