42287578 has 8 divisors (see below), whose sum is σ = 66769920. Its totient is φ = 20030940.

The previous prime is 42287569. The next prime is 42287617. The reversal of 42287578 is 87578224.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556378 + ... + 556453.

It is an arithmetic number, because the mean of its divisors is an integer number (8346240).

Almost surely, 2^42287578 is an apocalyptic number.

42287578 is a deficient number, since it is larger than the sum of its proper divisors (24482342).

42287578 is a wasteful number, since it uses less digits than its factorization.

42287578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112852.

The product of its digits is 250880, while the sum is 43.

The square root of 42287578 is about 6502.8899729274. The cubic root of 42287578 is about 348.3942167997.

The spelling of 42287578 in words is "forty-two million, two hundred eighty-seven thousand, five hundred seventy-eight".