42147286 has 4 divisors (see below), whose sum is σ = 63220932. Its totient is φ = 21073642.

The previous prime is 42147283. The next prime is 42147289. The reversal of 42147286 is 68274124.

It is a happy number.

42147286 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 is an interprime number because it is at equal distance from previous prime (42147283) and next prime (42147289).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42147283) 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, 10536820 + ... + 10536823.

It is an arithmetic number, because the mean of its divisors is an integer number (15805233).

Almost surely, 2^42147286 is an apocalyptic number.

42147286 is a deficient number, since it is larger than the sum of its proper divisors (21073646).

42147286 is a wasteful number, since it uses less digits than its factorization.

42147286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21073645.

The product of its digits is 21504, while the sum is 34.

The square root of 42147286 is about 6492.0941151527. The cubic root of 42147286 is about 348.0085158880.

The spelling of 42147286 in words is "forty-two million, one hundred forty-seven thousand, two hundred eighty-six".