8620042 has 4 divisors (see below), whose sum is σ = 12930066. Its totient is φ = 4310020.

The previous prime is 8619997. The next prime is 8620043. The reversal of 8620042 is 2400268.

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., 5193841 + 3426201 = 2279^2 + 1851^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8619995 and 8620022.

It is not an unprimeable number, because it can be changed into a prime (8620043) by changing a digit.

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, 2155009 + ... + 2155012.

Almost surely, 2^8620042 is an apocalyptic number.

8620042 is a deficient number, since it is larger than the sum of its proper divisors (4310024).

8620042 is a wasteful number, since it uses less digits than its factorization.

8620042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310023.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 8620042 is about 2935.9908038003. The cubic root of 8620042 is about 205.0389931775.

The spelling of 8620042 in words is "eight million, six hundred twenty thousand, forty-two".