42127786 has 8 divisors (see below), whose sum is σ = 63343044. Its totient is φ = 21013440.

The previous prime is 42127783. The next prime is 42127823. The reversal of 42127786 is 68772124.

It can be written as a sum of positive squares in 2 ways, for example, as 26327161 + 15800625 = 5131^2 + 3975^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42127783) by changing a digit.

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, 24175 + ... + 25858.

Almost surely, 2^42127786 is an apocalyptic number.

42127786 is a deficient number, since it is larger than the sum of its proper divisors (21215258).

42127786 is a wasteful number, since it uses less digits than its factorization.

42127786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50456.

The product of its digits is 37632, while the sum is 37.

The square root of 42127786 is about 6490.5921147458. The cubic root of 42127786 is about 347.9548373593.

The spelling of 42127786 in words is "forty-two million, one hundred twenty-seven thousand, seven hundred eighty-six".