40842223 has 4 divisors (see below), whose sum is σ = 40886568. Its totient is φ = 40797880.

The previous prime is 40842209. The next prime is 40842257. The reversal of 40842223 is 32224804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40842223 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 (40842203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20761 + ... + 22642.

It is an arithmetic number, because the mean of its divisors is an integer number (10221642).

Almost surely, 2^40842223 is an apocalyptic number.

40842223 is a deficient number, since it is larger than the sum of its proper divisors (44345).

40842223 is an equidigital number, since it uses as much as digits as its factorization.

40842223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44344.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 40842223 is about 6390.7920479390. The cubic root of 40842223 is about 344.3788388829.

The spelling of 40842223 in words is "forty million, eight hundred forty-two thousand, two hundred twenty-three".