42506278 has 8 divisors (see below), whose sum is σ = 63798840. Its totient is φ = 21240000.

The previous prime is 42506267. The next prime is 42506279. The reversal of 42506278 is 87260524.

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 (42506279) 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, 1848 + ... + 9403.

It is an arithmetic number, because the mean of its divisors is an integer number (7974855).

Almost surely, 2^42506278 is an apocalyptic number.

42506278 is a deficient number, since it is larger than the sum of its proper divisors (21292562).

42506278 is a wasteful number, since it uses less digits than its factorization.

42506278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 42506278 is about 6519.6838880424. The cubic root of 42506278 is about 348.9937848336.

The spelling of 42506278 in words is "forty-two million, five hundred six thousand, two hundred seventy-eight".