42228515 has 8 divisors (see below), whose sum is σ = 57913440. Its totient is φ = 28956672.

The previous prime is 42228503. The next prime is 42228523. The reversal of 42228515 is 51582224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42228515 - 2⁸ = 42228259 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603230 + ... + 603299.

It is an arithmetic number, because the mean of its divisors is an integer number (7239180).

Almost surely, 2^42228515 is an apocalyptic number.

42228515 is a deficient number, since it is larger than the sum of its proper divisors (15684925).

42228515 is a wasteful number, since it uses less digits than its factorization.

42228515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206541.

The product of its digits is 6400, while the sum is 29.

The square root of 42228515 is about 6498.3470975318. The cubic root of 42228515 is about 348.2319406571.

The spelling of 42228515 in words is "forty-two million, two hundred twenty-eight thousand, five hundred fifteen".