42464861 has 4 divisors (see below), whose sum is σ = 44962812. Its totient is φ = 39966912.

The previous prime is 42464843. The next prime is 42464893. The reversal of 42464861 is 16846424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25908100 + 16556761 = 5090^2 + 4069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42464861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42484861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1248950 + ... + 1248983.

It is an arithmetic number, because the mean of its divisors is an integer number (11240703).

Almost surely, 2^42464861 is an apocalyptic number.

It is an amenable number.

42464861 is a deficient number, since it is larger than the sum of its proper divisors (2497951).

42464861 is a wasteful number, since it uses less digits than its factorization.

42464861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497950.

The product of its digits is 36864, while the sum is 35.

The square root of 42464861 is about 6516.5068096335. The cubic root of 42464861 is about 348.8803978750.

The spelling of 42464861 in words is "forty-two million, four hundred sixty-four thousand, eight hundred sixty-one".