42290223 has 16 divisors (see below), whose sum is σ = 58322400. Its totient is φ = 27236736.

The previous prime is 42290221. The next prime is 42290233. The reversal of 42290223 is 32209224.

It is not a de Polignac number, because 42290223 - 2¹ = 42290221 is a prime.

It is a super-2 number, since 2×42290223² = 3576925922779458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42290193 and 42290202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42290221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15261 + ... + 17817.

It is an arithmetic number, because the mean of its divisors is an integer number (3645150).

Almost surely, 2^42290223 is an apocalyptic number.

42290223 is a deficient number, since it is larger than the sum of its proper divisors (16032177).

42290223 is a wasteful number, since it uses less digits than its factorization.

42290223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42290223 is about 6503.0933408648. The cubic root of 42290223 is about 348.4014804260.

Adding to 42290223 its reverse (32209224), we get a palindrome (74499447).

The spelling of 42290223 in words is "forty-two million, two hundred ninety thousand, two hundred twenty-three".