42128366 has 16 divisors (see below), whose sum is σ = 72627840. Its totient is φ = 17953080.

The previous prime is 42128357. The next prime is 42128389. The reversal of 42128366 is 66382124.

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, 5900 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (4539240).

Almost surely, 2^42128366 is an apocalyptic number.

42128366 is a deficient number, since it is larger than the sum of its proper divisors (30499474).

42128366 is a wasteful number, since it uses less digits than its factorization.

42128366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16999.

The product of its digits is 13824, while the sum is 32.

The square root of 42128366 is about 6490.6367946450. The cubic root of 42128366 is about 347.9564341904.

The spelling of 42128366 in words is "forty-two million, one hundred twenty-eight thousand, three hundred sixty-six".