6642626242 has 32 divisors (see below), whose sum is σ = 11513779200. Its totient is φ = 2815395408.

The previous prime is 6642626227. The next prime is 6642626281. The reversal of 6642626242 is 2426262466.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6642626195 and 6642626204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505309 + ... + 518287.

It is an arithmetic number, because the mean of its divisors is an integer number (359805600).

Almost surely, 2^6642626242 is an apocalyptic number.

6642626242 is a deficient number, since it is larger than the sum of its proper divisors (4871152958).

6642626242 is a wasteful number, since it uses less digits than its factorization.

6642626242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13390.

The product of its digits is 331776, while the sum is 40.

The square root of 6642626242 is about 81502.3082004430. The cubic root of 6642626242 is about 1879.8070424037.

The spelling of 6642626242 in words is "six billion, six hundred forty-two million, six hundred twenty-six thousand, two hundred forty-two".