42059978 has 8 divisors (see below), whose sum is σ = 63147360. Its totient is φ = 21010860.

The previous prime is 42059929. The next prime is 42059999. The reversal of 42059978 is 87995024.

It is a happy number.

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

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, 6638 + ... + 11321.

It is an arithmetic number, because the mean of its divisors is an integer number (7893420).

Almost surely, 2^42059978 is an apocalyptic number.

42059978 is a deficient number, since it is larger than the sum of its proper divisors (21087382).

42059978 is a wasteful number, since it uses less digits than its factorization.

42059978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19132.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 42059978 is about 6485.3664507104. The cubic root of 42059978 is about 347.7680501732.

The spelling of 42059978 in words is "forty-two million, fifty-nine thousand, nine hundred seventy-eight".