212013235242 has 16 divisors (see below), whose sum is σ = 471140522880. Its totient is φ = 70671078396.

The previous prime is 212013235241. The next prime is 212013235283. The reversal of 212013235242 is 242532310212.

212013235242 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 132 + 3 + 524 + 2 = 666.

It is a super-2 number, since 2×212013235242² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (212013235241) 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, 1963085458 + ... + 1963085565.

It is an arithmetic number, because the mean of its divisors is an integer number (29446282680).

Almost surely, 2^212013235242 is an apocalyptic number.

212013235242 is an abundant number, since it is smaller than the sum of its proper divisors (259127287638).

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

212013235242 is a wasteful number, since it uses less digits than its factorization.

212013235242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926171034 (or 3926171028 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 212013235242 its reverse (242532310212), we get a palindrome (454545545454).

The spelling of 212013235242 in words is "two hundred twelve billion, thirteen million, two hundred thirty-five thousand, two hundred forty-two".