642743222347246 has 16 divisors (see below), whose sum is σ = 973480753720800. Its totient is φ = 318249673555968.

The previous prime is 642743222347243. The next prime is 642743222347253.

642743222347246 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642743222347243) by changing a digit.

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, 27425110 + ... + 45140038.

It is an arithmetic number, because the mean of its divisors is an integer number (60842547107550).

Almost surely, 2^{642743222347246} is an apocalyptic number.

642743222347246 is a deficient number, since it is larger than the sum of its proper divisors (330737531373554).

642743222347246 is a wasteful number, since it uses less digits than its factorization.

642743222347246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17891163.

The product of its digits is 130056192, while the sum is 58.

The spelling of 642743222347246 in words is "six hundred forty-two trillion, seven hundred forty-three billion, two hundred twenty-two million, three hundred forty-seven thousand, two hundred forty-six".