42228707 has 4 divisors (see below), whose sum is σ = 42269280. Its totient is φ = 42188136.

The previous prime is 42228691. The next prime is 42228721. The reversal of 42228707 is 70782224.

It is a happy number.

42228707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42228707 - 2⁴ = 42228691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42228737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18683 + ... + 20820.

It is an arithmetic number, because the mean of its divisors is an integer number (10567320).

Almost surely, 2^42228707 is an apocalyptic number.

42228707 is a deficient number, since it is larger than the sum of its proper divisors (40573).

42228707 is a wasteful number, since it uses less digits than its factorization.

42228707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40572.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 42228707 is about 6498.3618705024. The cubic root of 42228707 is about 348.2324684239.

The spelling of 42228707 in words is "forty-two million, two hundred twenty-eight thousand, seven hundred seven".