212542452 has 36 divisors (see below), whose sum is σ = 540277920. Its totient is φ = 70449552.

The previous prime is 212542439. The next prime is 212542453. The reversal of 212542452 is 254245212.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212542453) 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, 10048 + ... + 22935.

It is an arithmetic number, because the mean of its divisors is an integer number (15007720).

Almost surely, 2^212542452 is an apocalyptic number.

It is an amenable number.

212542452 is an abundant number, since it is smaller than the sum of its proper divisors (327735468).

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

212542452 is a wasteful number, since it uses less digits than its factorization.

212542452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33172 (or 33167 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 212542452 is about 14578.8357559855. The cubic root of 212542452 is about 596.7813311597.

Adding to 212542452 its reverse (254245212), we get a palindrome (466787664).

The spelling of 212542452 in words is "two hundred twelve million, five hundred forty-two thousand, four hundred fifty-two".