212402132 has 6 divisors (see below), whose sum is σ = 371703738. Its totient is φ = 106201064.

The previous prime is 212402129. The next prime is 212402207. The reversal of 212402132 is 231204212.

It can be written as a sum of positive squares in only one way, i.e., 189227536 + 23174596 = 13756^2 + 4814^2 .

It is a super-2 number, since 2×212402132² = 90229331356290848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212402132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26550263 + ... + 26550270.

It is an arithmetic number, because the mean of its divisors is an integer number (61950623).

Almost surely, 2^212402132 is an apocalyptic number.

It is an amenable number.

212402132 is a deficient number, since it is larger than the sum of its proper divisors (159301606).

212402132 is a wasteful number, since it uses less digits than its factorization.

212402132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53100537 (or 53100535 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212402132 is about 14574.0225058149. The cubic root of 212402132 is about 596.6499710624.

Adding to 212402132 its reverse (231204212), we get a palindrome (443606344).

The spelling of 212402132 in words is "two hundred twelve million, four hundred two thousand, one hundred thirty-two".