642433334246 has 16 divisors (see below), whose sum is σ = 1051928916480. Its totient is φ = 291827827080.

The previous prime is 642433334203. The next prime is 642433334251.

642433334246 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 642433334197 and 642433334206.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9331166 + ... + 9399761.

It is an arithmetic number, because the mean of its divisors is an integer number (65745557280).

Almost surely, 2^642433334246 is an apocalyptic number.

642433334246 is a deficient number, since it is larger than the sum of its proper divisors (409495582234).

642433334246 is a wasteful number, since it uses less digits than its factorization.

642433334246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18732499.

The product of its digits is 2985984, while the sum is 44.

It can be divided in two parts, 642433 and 334246, that added together give a palindrome (976679).

The spelling of 642433334246 in words is "six hundred forty-two billion, four hundred thirty-three million, three hundred thirty-four thousand, two hundred forty-six".