42086947 has 8 divisors (see below), whose sum is σ = 48138752. Its totient is φ = 36045000.

The previous prime is 42086939. The next prime is 42086953. The reversal of 42086947 is 74968024.

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

It is a cyclic number.

It is not a de Polignac number, because 42086947 - 2³ = 42086939 is a prime.

It is a super-2 number, since 2×42086947² = 3542622215561618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42086147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14422 + ... + 17092.

It is an arithmetic number, because the mean of its divisors is an integer number (6017344).

Almost surely, 2^42086947 is an apocalyptic number.

42086947 is a deficient number, since it is larger than the sum of its proper divisors (6051805).

42086947 is a wasteful number, since it uses less digits than its factorization.

42086947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 42086947 is about 6487.4453369566. The cubic root of 42086947 is about 347.8423643082.

The spelling of 42086947 in words is "forty-two million, eighty-six thousand, nine hundred forty-seven".