42486665 has 8 divisors (see below), whose sum is σ = 54905928. Its totient is φ = 31374720.

The previous prime is 42486659. The next prime is 42486677. The reversal of 42486665 is 56668424.

It can be written as a sum of positive squares in 4 ways, for example, as 6869641 + 35617024 = 2621^2 + 5968^2 .

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

It is not a de Polignac number, because 42486665 - 2²² = 38292361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326756 + ... + 326885.

It is an arithmetic number, because the mean of its divisors is an integer number (6863241).

Almost surely, 2^42486665 is an apocalyptic number.

It is an amenable number.

42486665 is a deficient number, since it is larger than the sum of its proper divisors (12419263).

42486665 is a wasteful number, since it uses less digits than its factorization.

42486665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653659.

The product of its digits is 276480, while the sum is 41.

The square root of 42486665 is about 6518.1795771519. The cubic root of 42486665 is about 348.9400996804.

The spelling of 42486665 in words is "forty-two million, four hundred eighty-six thousand, six hundred sixty-five".