42066823 has 8 divisors (see below), whose sum is σ = 45297360. Its totient is φ = 38920320.

The previous prime is 42066811. The next prime is 42066841. The reversal of 42066823 is 32866024.

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 42066823 - 2²⁵ = 8512391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42066883) 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, 19968 + ... + 21973.

It is an arithmetic number, because the mean of its divisors is an integer number (5662170).

Almost surely, 2^42066823 is an apocalyptic number.

42066823 is a deficient number, since it is larger than the sum of its proper divisors (3230537).

42066823 is a wasteful number, since it uses less digits than its factorization.

42066823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42017.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 42066823 is about 6485.8941557815. The cubic root of 42066823 is about 347.7869148461.

The spelling of 42066823 in words is "forty-two million, sixty-six thousand, eight hundred twenty-three".