42578086 has 8 divisors (see below), whose sum is σ = 64274400. Its totient is φ = 21153288.

The previous prime is 42578071. The next prime is 42578101. The reversal of 42578086 is 68087524.

It is an interprime number because it is at equal distance from previous prime (42578071) and next prime (42578101).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 67486 + ... + 68113.

It is an arithmetic number, because the mean of its divisors is an integer number (8034300).

Almost surely, 2^42578086 is an apocalyptic number.

42578086 is a deficient number, since it is larger than the sum of its proper divisors (21696314).

42578086 is a wasteful number, since it uses less digits than its factorization.

42578086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135758.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 42578086 is about 6525.1885796504. The cubic root of 42578086 is about 349.1901985408.

The spelling of 42578086 in words is "forty-two million, five hundred seventy-eight thousand, eighty-six".