212430144 has 28 divisors (see below), whose sum is σ = 562055264. Its totient is φ = 70809984.

The previous prime is 212430137. The next prime is 212430167. The reversal of 212430144 is 441034212.

It is a self number, because there is not a number n which added to its sum of digits gives 212430144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553012 + ... + 553395.

Almost surely, 2^212430144 is an apocalyptic number.

212430144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212430144 is an abundant number, since it is smaller than the sum of its proper divisors (349625120).

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

212430144 is a wasteful number, since it uses less digits than its factorization.

212430144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106422 (or 1106412 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 212430144 is about 14574.9834991330. The cubic root of 212430144 is about 596.6761990231.

Adding to 212430144 its reverse (441034212), we get a palindrome (653464356).

The spelling of 212430144 in words is "two hundred twelve million, four hundred thirty thousand, one hundred forty-four".