42228730 has 16 divisors (see below), whose sum is σ = 76126464. Its totient is φ = 16866000.

The previous prime is 42228721. The next prime is 42228737. The reversal of 42228730 is 3782224.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4699 + ... + 10321.

It is an arithmetic number, because the mean of its divisors is an integer number (4757904).

Almost surely, 2^42228730 is an apocalyptic number.

42228730 is a deficient number, since it is larger than the sum of its proper divisors (33897734).

42228730 is a wasteful number, since it uses less digits than its factorization.

42228730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 42228730 is about 6498.3636401790. The cubic root of 42228730 is about 348.2325316459.

The spelling of 42228730 in words is "forty-two million, two hundred twenty-eight thousand, seven hundred thirty".