212420444240042 has 8 divisors (see below), whose sum is σ = 318633915302532. Its totient is φ = 106209139139200.

The previous prime is 212420444240033. The next prime is 212420444240057. The reversal of 212420444240042 is 240042444024212.

It can be written as a sum of positive squares in 2 ways, for example, as 189567158818921 + 22853285421121 = 13768339^2 + 4780511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212420444240042² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212420444239984 and 212420444240011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541245209 + ... + 541637532.

Almost surely, 2^{212420444240042} is an apocalyptic number.

212420444240042 is a deficient number, since it is larger than the sum of its proper divisors (106213471062490).

212420444240042 is a wasteful number, since it uses less digits than its factorization.

212420444240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082980824.

The product of its (nonzero) digits is 131072, while the sum is 35.

Adding to 212420444240042 its reverse (240042444024212), we get a palindrome (452462888264254).

The spelling of 212420444240042 in words is "two hundred twelve trillion, four hundred twenty billion, four hundred forty-four million, two hundred forty thousand, forty-two".