42284786 has 4 divisors (see below), whose sum is σ = 63427182. Its totient is φ = 21142392.

The previous prime is 42284771. The next prime is 42284789. The reversal of 42284786 is 68748224.

42284786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40513225 + 1771561 = 6365^2 + 1331^2 .

It is not an unprimeable number, because it can be changed into a prime (42284789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571195 + ... + 10571198.

Almost surely, 2^42284786 is an apocalyptic number.

42284786 is a deficient number, since it is larger than the sum of its proper divisors (21142396).

42284786 is a wasteful number, since it uses less digits than its factorization.

42284786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21142395.

The product of its digits is 172032, while the sum is 41.

The square root of 42284786 is about 6502.6752955995. The cubic root of 42284786 is about 348.3865491575.

The spelling of 42284786 in words is "forty-two million, two hundred eighty-four thousand, seven hundred eighty-six".