42017278 has 8 divisors (see below), whose sum is σ = 64491768. Its totient is φ = 20520024.

The previous prime is 42017273. The next prime is 42017279. The reversal of 42017278 is 87271024.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42017273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244201 + ... + 244372.

It is an arithmetic number, because the mean of its divisors is an integer number (8061471).

Almost surely, 2^42017278 is an apocalyptic number.

42017278 is a deficient number, since it is larger than the sum of its proper divisors (22474490).

42017278 is a wasteful number, since it uses less digits than its factorization.

42017278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488618.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 42017278 is about 6482.0735879809. The cubic root of 42017278 is about 347.6503236589.

The spelling of 42017278 in words is "forty-two million, seventeen thousand, two hundred seventy-eight".