8470642 has 4 divisors (see below), whose sum is σ = 12705966. Its totient is φ = 4235320.

The previous prime is 8470597. The next prime is 8470661. The reversal of 8470642 is 2460748.

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., 6095961 + 2374681 = 2469^2 + 1541^2 .

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 as a sum of consecutive naturals, namely, 2117659 + ... + 2117662.

Almost surely, 2^8470642 is an apocalyptic number.

8470642 is a deficient number, since it is larger than the sum of its proper divisors (4235324).

8470642 is a wasteful number, since it uses less digits than its factorization.

8470642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235323.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 8470642 is about 2910.4367369864. The cubic root of 8470642 is about 203.8475247929.

It can be divided in two parts, 84706 and 42, that added together give a palindrome (84748).

The spelling of 8470642 in words is "eight million, four hundred seventy thousand, six hundred forty-two".