42868586 has 4 divisors (see below), whose sum is σ = 64302882. Its totient is φ = 21434292.

The previous prime is 42868561. The next prime is 42868597. The reversal of 42868586 is 68586824.

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

It can be written as a sum of positive squares in only one way, i.e., 27510025 + 15358561 = 5245^2 + 3919^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42868586.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10717145 + ... + 10717148.

Almost surely, 2^42868586 is an apocalyptic number.

42868586 is a deficient number, since it is larger than the sum of its proper divisors (21434296).

42868586 is a wasteful number, since it uses less digits than its factorization.

42868586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21434295.

The product of its digits is 737280, while the sum is 47.

The square root of 42868586 is about 6547.4106332198. The cubic root of 42868586 is about 349.9825460684.

The spelling of 42868586 in words is "forty-two million, eight hundred sixty-eight thousand, five hundred eighty-six".