212402412 has 36 divisors (see below), whose sum is σ = 556794056. Its totient is φ = 70800480.

The previous prime is 212402381. The next prime is 212402417. The reversal of 212402412 is 214204212.

212402412 is a `hidden beast` number, since 212 + 40 + 2 + 412 = 666.

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

It is a super-2 number, since 2×212402412² = 90229569246835488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212402417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108289 + ... + 110232.

Almost surely, 2^212402412 is an apocalyptic number.

It is an amenable number.

212402412 is an abundant number, since it is smaller than the sum of its proper divisors (344391644).

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

212402412 is a wasteful number, since it uses less digits than its factorization.

212402412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218540 (or 218526 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 212402412 is about 14574.0321119449. The cubic root of 212402412 is about 596.6502332410.

Adding to 212402412 its reverse (214204212), we get a palindrome (426606624).

The spelling of 212402412 in words is "two hundred twelve million, four hundred two thousand, four hundred twelve".