243212212342 has 16 divisors (see below), whose sum is σ = 421394422032. Its totient is φ = 104048005120.

The previous prime is 243212212337. The next prime is 243212212361.

243212212342 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 243212212342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325149643 + ... + 325150390.

It is an arithmetic number, because the mean of its divisors is an integer number (26337151377).

Almost surely, 2^243212212342 is an apocalyptic number.

243212212342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243212212342 is a deficient number, since it is larger than the sum of its proper divisors (178182209690).

243212212342 is a wasteful number, since it uses less digits than its factorization.

243212212342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650300063.

The product of its digits is 9216, while the sum is 28.

It can be divided in two parts, 243212 and 212342, that added together give a palindrome (455554).

The spelling of 243212212342 in words is "two hundred forty-three billion, two hundred twelve million, two hundred twelve thousand, three hundred forty-two".