421212444442 has 16 divisors (see below), whose sum is σ = 638145619200. Its totient is φ = 208497704400.

The previous prime is 421212444427. The next prime is 421212444503. The reversal of 421212444442 is 244444212124.

It is a junction number, because it is equal to n+sod(n) for n = 421212444398 and 421212444407.

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, 1770559 + ... + 1994317.

It is an arithmetic number, because the mean of its divisors is an integer number (39884101200).

Almost surely, 2^421212444442 is an apocalyptic number.

421212444442 is a deficient number, since it is larger than the sum of its proper divisors (216933174758).

421212444442 is a wasteful number, since it uses less digits than its factorization.

421212444442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233181.

The product of its digits is 65536, while the sum is 34.

Adding to 421212444442 its reverse (244444212124), we get a palindrome (665656656566).

The spelling of 421212444442 in words is "four hundred twenty-one billion, two hundred twelve million, four hundred forty-four thousand, four hundred forty-two".