4247842 has 8 divisors (see below), whose sum is σ = 6409116. Its totient is φ = 2111472.

The previous prime is 4247827. The next prime is 4247863. The reversal of 4247842 is 2487424.

It can be written as a sum of positive squares in 2 ways, for example, as 4247721 + 121 = 2061^2 + 11^2 .

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 (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5793 + ... + 6484.

Almost surely, 2^4247842 is an apocalyptic number.

4247842 is a deficient number, since it is larger than the sum of its proper divisors (2161274).

4247842 is a wasteful number, since it uses less digits than its factorization.

4247842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12452.

The product of its digits is 14336, while the sum is 31.

The square root of 4247842 is about 2061.0293544731. The cubic root of 4247842 is about 161.9531694134.

The spelling of 4247842 in words is "four million, two hundred forty-seven thousand, eight hundred forty-two".