212706434 has 8 divisors (see below), whose sum is σ = 319614348. Its totient is φ = 106168320.

The previous prime is 212706427. The next prime is 212706457. The reversal of 212706434 is 434607212.

It can be written as a sum of positive squares in 2 ways, for example, as 157427209 + 55279225 = 12547^2 + 7435^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 212706397 and 212706406.

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, 91007 + ... + 93314.

Almost surely, 2^212706434 is an apocalyptic number.

212706434 is a deficient number, since it is larger than the sum of its proper divisors (106907914).

212706434 is a wasteful number, since it uses less digits than its factorization.

212706434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184900.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 212706434 is about 14584.4586461068. The cubic root of 212706434 is about 596.9347691177.

The spelling of 212706434 in words is "two hundred twelve million, seven hundred six thousand, four hundred thirty-four".