42228147 has 16 divisors (see below), whose sum is σ = 62727840. Its totient is φ = 25089792.

The previous prime is 42228143. The next prime is 42228163. The reversal of 42228147 is 74182224.

It is not a de Polignac number, because 42228147 - 2² = 42228143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42228143) 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, 17538 + ... + 19799.

It is an arithmetic number, because the mean of its divisors is an integer number (3920490).

Almost surely, 2^42228147 is an apocalyptic number.

42228147 is a deficient number, since it is larger than the sum of its proper divisors (20499693).

42228147 is a wasteful number, since it uses less digits than its factorization.

42228147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37382.

The product of its digits is 7168, while the sum is 30.

The square root of 42228147 is about 6498.3187825775. The cubic root of 42228147 is about 348.2309290995.

The spelling of 42228147 in words is "forty-two million, two hundred twenty-eight thousand, one hundred forty-seven".