6442043642 has 16 divisors (see below), whose sum is σ = 10104823872. Its totient is φ = 3074369760.

The previous prime is 6442043603. The next prime is 6442043659. The reversal of 6442043642 is 2463402446.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128459 + ... + 171422.

It is an arithmetic number, because the mean of its divisors is an integer number (631551492).

Almost surely, 2^6442043642 is an apocalyptic number.

6442043642 is a deficient number, since it is larger than the sum of its proper divisors (3662780230).

6442043642 is a wasteful number, since it uses less digits than its factorization.

6442043642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300373.

The product of its (nonzero) digits is 110592, while the sum is 35.

The square root of 6442043642 is about 80262.3426147032. The cubic root of 6442043642 is about 1860.6922734319.

The spelling of 6442043642 in words is "six billion, four hundred forty-two million, forty-three thousand, six hundred forty-two".