212440546 has 8 divisors (see below), whose sum is σ = 320029164. Its totient is φ = 105764160.

The previous prime is 212440537. The next prime is 212440549. The reversal of 212440546 is 645044212.

212440546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 203205025 + 9235521 = 14255^2 + 3039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (212440549) 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, 227475 + ... + 228406.

Almost surely, 2^212440546 is an apocalyptic number.

212440546 is a deficient number, since it is larger than the sum of its proper divisors (107588618).

212440546 is a wasteful number, since it uses less digits than its factorization.

212440546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456116.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 212440546 is about 14575.3403390796. The cubic root of 212440546 is about 596.6859379493.

Adding to 212440546 its reverse (645044212), we get a palindrome (857484758).

The spelling of 212440546 in words is "two hundred twelve million, four hundred forty thousand, five hundred forty-six".