212440052 has 36 divisors (see below), whose sum is σ = 424013856. Its totient is φ = 92355120.

The previous prime is 212440043. The next prime is 212440069. The reversal of 212440052 is 250044212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18713 + ... + 27839.

Almost surely, 2^212440052 is an apocalyptic number.

212440052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212440052 is a deficient number, since it is larger than the sum of its proper divisors (211573804).

212440052 is a wasteful number, since it uses less digits than its factorization.

212440052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9188 (or 9163 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 212440052 is about 14575.3233926387. The cubic root of 212440052 is about 596.6854754465.

Adding to 212440052 its reverse (250044212), we get a palindrome (462484264).

The spelling of 212440052 in words is "two hundred twelve million, four hundred forty thousand, fifty-two".