213424111242 has 24 divisors (see below), whose sum is σ = 469999547940. Its totient is φ = 69975118080.

The previous prime is 213424111217. The next prime is 213424111247. The reversal of 213424111242 is 242111424312.

213424111242 is a `hidden beast` number, since 2 + 1 + 3 + 4 + 2 + 411 + 1 + 242 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 213286025241 + 138086001 = 461829^2 + 11751^2 .

It is not an unprimeable number, because it can be changed into a prime (213424111247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97186567 + ... + 97188762.

Almost surely, 2^213424111242 is an apocalyptic number.

213424111242 is an abundant number, since it is smaller than the sum of its proper divisors (256575436698).

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

213424111242 is a wasteful number, since it uses less digits than its factorization.

213424111242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194375398 (or 194375395 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 213424111242 its reverse (242111424312), we get a palindrome (455535535554).

The spelling of 213424111242 in words is "two hundred thirteen billion, four hundred twenty-four million, one hundred eleven thousand, two hundred forty-two".