42069878 has 8 divisors (see below), whose sum is σ = 63865368. Its totient is φ = 20781424.

The previous prime is 42069803. The next prime is 42069913. The reversal of 42069878 is 87896024.

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, 126551 + ... + 126882.

It is an arithmetic number, because the mean of its divisors is an integer number (7983171).

Almost surely, 2^42069878 is an apocalyptic number.

42069878 is a deficient number, since it is larger than the sum of its proper divisors (21795490).

42069878 is a wasteful number, since it uses less digits than its factorization.

42069878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253518.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 42069878 is about 6486.1296625954. The cubic root of 42069878 is about 347.7953336999.

The spelling of 42069878 in words is "forty-two million, sixty-nine thousand, eight hundred seventy-eight".