42042223 has 8 divisors (see below), whose sum is σ = 42514560. Its totient is φ = 41572440.

The previous prime is 42042211. The next prime is 42042227. The reversal of 42042223 is 32224024.

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 42042223 - 2⁵ = 42042191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42042223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042227) 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, 63468 + ... + 64126.

It is an arithmetic number, because the mean of its divisors is an integer number (5314320).

Almost surely, 2^42042223 is an apocalyptic number.

42042223 is a deficient number, since it is larger than the sum of its proper divisors (472337).

42042223 is a wasteful number, since it uses less digits than its factorization.

42042223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42042223 is about 6483.9974552740. The cubic root of 42042223 is about 347.7191082331.

Adding to 42042223 its reverse (32224024), we get a palindrome (74266247).

The spelling of 42042223 in words is "forty-two million, forty-two thousand, two hundred twenty-three".