42225199 has 4 divisors (see below), whose sum is σ = 42382440. Its totient is φ = 42067960.

The previous prime is 42225173. The next prime is 42225257. The reversal of 42225199 is 99152224.

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

It is a cyclic number.

It is not a de Polignac number, because 42225199 - 2¹⁷ = 42094127 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 (42225299) 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, 78217 + ... + 78754.

It is an arithmetic number, because the mean of its divisors is an integer number (10595610).

Almost surely, 2^42225199 is an apocalyptic number.

42225199 is a deficient number, since it is larger than the sum of its proper divisors (157241).

42225199 is a wasteful number, since it uses less digits than its factorization.

42225199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157240.

The product of its digits is 12960, while the sum is 34.

The square root of 42225199 is about 6498.0919507191. The cubic root of 42225199 is about 348.2228254313. Note that the first 3 decimals are identical.

Subtracting 42225199 from its reverse (99152224), we obtain a square (56927025 = 7545²).

It can be divided in two parts, 42225 and 199, that added together give a palindrome (42424).

The spelling of 42225199 in words is "forty-two million, two hundred twenty-five thousand, one hundred ninety-nine".