42280866 has 40 divisors (see below), whose sum is σ = 95135040. Its totient is φ = 14035032.

The previous prime is 42280817. The next prime is 42280873. The reversal of 42280866 is 66808224.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42280866.

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 19 ways as a sum of consecutive naturals, for example, 57795 + ... + 58521.

It is an arithmetic number, because the mean of its divisors is an integer number (2378376).

Almost surely, 2^42280866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42280866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47567520).

42280866 is an abundant number, since it is smaller than the sum of its proper divisors (52854174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42280866 is a wasteful number, since it uses less digits than its factorization.

42280866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 42280866 is about 6502.3738742093. The cubic root of 42280866 is about 348.3757831302.

The spelling of 42280866 in words is "forty-two million, two hundred eighty thousand, eight hundred sixty-six".