42028078 has 8 divisors (see below), whose sum is σ = 64746072. Its totient is φ = 20446056.

The previous prime is 42028043. The next prime is 42028087. The reversal of 42028078 is 87082024.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283900 + ... + 284047.

It is an arithmetic number, because the mean of its divisors is an integer number (8093259).

Almost surely, 2^42028078 is an apocalyptic number.

42028078 is a deficient number, since it is larger than the sum of its proper divisors (22717994).

42028078 is a wasteful number, since it uses less digits than its factorization.

42028078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567986.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 42028078 is about 6482.9066012091. The cubic root of 42028078 is about 347.6801074529.

The spelling of 42028078 in words is "forty-two million, twenty-eight thousand, seventy-eight".