42228406 has 16 divisors (see below), whose sum is σ = 69750720. Its totient is φ = 19014280.

The previous prime is 42228371. The next prime is 42228421. The reversal of 42228406 is 60482224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6616 + ... + 11323.

It is an arithmetic number, because the mean of its divisors is an integer number (4359420).

Almost surely, 2^42228406 is an apocalyptic number.

42228406 is a deficient number, since it is larger than the sum of its proper divisors (27522314).

42228406 is a wasteful number, since it uses less digits than its factorization.

42228406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18059.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 42228406 is about 6498.3387107783. The cubic root of 42228406 is about 348.2316410387.

The spelling of 42228406 in words is "forty-two million, two hundred twenty-eight thousand, four hundred six".