212555434 has 24 divisors (see below), whose sum is σ = 399419748. Its totient is φ = 84087360.

The previous prime is 212555401. The next prime is 212555449. The reversal of 212555434 is 434555212.

It can be written as a sum of positive squares in 2 ways, for example, as 211789809 + 765625 = 14553^2 + 875^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212555396 and 212555405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82147 + ... + 84694.

Almost surely, 2^212555434 is an apocalyptic number.

212555434 is a deficient number, since it is larger than the sum of its proper divisors (186864314).

212555434 is a wasteful number, since it uses less digits than its factorization.

212555434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166870 (or 166863 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 212555434 is about 14579.2809836425. The cubic root of 212555434 is about 596.7934812932.

The spelling of 212555434 in words is "two hundred twelve million, five hundred fifty-five thousand, four hundred thirty-four".