426665440210342 has 4 divisors (see below), whose sum is σ = 639998160315516. Its totient is φ = 213332720105170.

The previous prime is 426665440210333. The next prime is 426665440210363. The reversal of 426665440210342 is 243012044566624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106666360052584 + ... + 106666360052587.

It is an arithmetic number, because the mean of its divisors is an integer number (159999540078879).

Almost surely, 2^{426665440210342} is an apocalyptic number.

426665440210342 is a deficient number, since it is larger than the sum of its proper divisors (213332720105174).

426665440210342 is a wasteful number, since it uses less digits than its factorization.

426665440210342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213332720105173.

The product of its (nonzero) digits is 6635520, while the sum is 49.

Adding to 426665440210342 its reverse (243012044566624), we get a palindrome (669677484776966).

The spelling of 426665440210342 in words is "four hundred twenty-six trillion, six hundred sixty-five billion, four hundred forty million, two hundred ten thousand, three hundred forty-two".