42028015 has 8 divisors (see below), whose sum is σ = 52626528. Its totient is φ = 32160480.

The previous prime is 42028013. The next prime is 42028031. The reversal of 42028015 is 51082024.

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

It is not a de Polignac number, because 42028015 - 2¹ = 42028013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42028013) 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, 182616 + ... + 182845.

It is an arithmetic number, because the mean of its divisors is an integer number (6578316).

Almost surely, 2^42028015 is an apocalyptic number.

42028015 is a deficient number, since it is larger than the sum of its proper divisors (10598513).

42028015 is a wasteful number, since it uses less digits than its factorization.

42028015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365489.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 42028015 is about 6482.9017422756. The cubic root of 42028015 is about 347.6799337289.

The spelling of 42028015 in words is "forty-two million, twenty-eight thousand, fifteen".