213422123442 has 48 divisors (see below), whose sum is σ = 470001379680. Its totient is φ = 64559584320.

The previous prime is 213422123417. The next prime is 213422123461. The reversal of 213422123442 is 244321224312.

213422123442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 154773 + ... + 671415.

It is an arithmetic number, because the mean of its divisors is an integer number (9791695410).

Almost surely, 2^213422123442 is an apocalyptic number.

213422123442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 213422123442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235000689840).

213422123442 is an abundant number, since it is smaller than the sum of its proper divisors (256579256238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213422123442 is a wasteful number, since it uses less digits than its factorization.

213422123442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517239 (or 517228 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 213422123442 its reverse (244321224312), we get a palindrome (457743347754).

The spelling of 213422123442 in words is "two hundred thirteen billion, four hundred twenty-two million, one hundred twenty-three thousand, four hundred forty-two".