212432144 has 20 divisors (see below), whose sum is σ = 415586496. Its totient is φ = 105184032.

The previous prime is 212432137. The next prime is 212432149. The reversal of 212432144 is 441234212.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (212432149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62804 + ... + 66099.

Almost surely, 2^212432144 is an apocalyptic number.

It is an amenable number.

212432144 is a deficient number, since it is larger than the sum of its proper divisors (203154352).

212432144 is a wasteful number, since it uses less digits than its factorization.

212432144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129014 (or 129008 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 212432144 is about 14575.0521096839. The cubic root of 212432144 is about 596.6780715581.

Adding to 212432144 its reverse (441234212), we get a palindrome (653666356).

The spelling of 212432144 in words is "two hundred twelve million, four hundred thirty-two thousand, one hundred forty-four".