212042256424 has 32 divisors (see below), whose sum is σ = 398568381120. Its totient is φ = 105757497216.

The previous prime is 212042256409. The next prime is 212042256427. The reversal of 212042256424 is 424652240212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212042256424.

It is not an unprimeable number, because it can be changed into a prime (212042256427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16529677 + ... + 16542499.

It is an arithmetic number, because the mean of its divisors is an integer number (12455261910).

Almost surely, 2^212042256424 is an apocalyptic number.

It is an amenable number.

212042256424 is a deficient number, since it is larger than the sum of its proper divisors (186526124696).

212042256424 is a wasteful number, since it uses less digits than its factorization.

212042256424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17809 (or 17805 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 212042256424 its reverse (424652240212), we get a palindrome (636694496636).

The spelling of 212042256424 in words is "two hundred twelve billion, forty-two million, two hundred fifty-six thousand, four hundred twenty-four".