212134426 has 24 divisors (see below), whose sum is σ = 382098816. Its totient is φ = 87980760.

The previous prime is 212134421. The next prime is 212134427. The reversal of 212134426 is 624431212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212134426.

It is not an unprimeable number, because it can be changed into a prime (212134421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31876 + ... + 37951.

It is an arithmetic number, because the mean of its divisors is an integer number (15920784).

Almost surely, 2^212134426 is an apocalyptic number.

212134426 is a deficient number, since it is larger than the sum of its proper divisors (169964390).

212134426 is a wasteful number, since it uses less digits than its factorization.

212134426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69874 (or 69867 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 212134426 is about 14564.8352548184. The cubic root of 212134426 is about 596.3991984237.

Adding to 212134426 its reverse (624431212), we get a palindrome (836565638).

The spelling of 212134426 in words is "two hundred twelve million, one hundred thirty-four thousand, four hundred twenty-six".