212405044 has 6 divisors (see below), whose sum is σ = 371708834. Its totient is φ = 106202520.

The previous prime is 212405033. The next prime is 212405093. The reversal of 212405044 is 440504212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 192155044 + 20250000 = 13862^2 + 4500^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26550627 + ... + 26550634.

Almost surely, 2^212405044 is an apocalyptic number.

It is an amenable number.

212405044 is a deficient number, since it is larger than the sum of its proper divisors (159303790).

212405044 is a wasteful number, since it uses less digits than its factorization.

212405044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53101265 (or 53101263 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 212405044 is about 14574.1224092568. The cubic root of 212405044 is about 596.6526977092.

Adding to 212405044 its reverse (440504212), we get a palindrome (652909256).

The spelling of 212405044 in words is "two hundred twelve million, four hundred five thousand, forty-four".