212424534 has 48 divisors (see below), whose sum is σ = 529281792. Its totient is φ = 60314544.

The previous prime is 212424529. The next prime is 212424539. The reversal of 212424534 is 435424212.

212424534 is a `hidden beast` number, since 2 + 124 + 2 + 4 + 534 = 666.

It is an interprime number because it is at equal distance from previous prime (212424529) and next prime (212424539).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212424498 and 212424507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212424539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15367 + ... + 25709.

It is an arithmetic number, because the mean of its divisors is an integer number (11026704).

Almost surely, 2^212424534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212424534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264640896).

212424534 is an abundant number, since it is smaller than the sum of its proper divisors (316857258).

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

212424534 is a wasteful number, since it uses less digits than its factorization.

212424534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521 (or 10518 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 212424534 is about 14574.7910448143. The cubic root of 212424534 is about 596.6709464996.

Adding to 212424534 its reverse (435424212), we get a palindrome (647848746).

The spelling of 212424534 in words is "two hundred twelve million, four hundred twenty-four thousand, five hundred thirty-four".