212423422 has 8 divisors (see below), whose sum is σ = 320039496. Its totient is φ = 105743592.

The previous prime is 212423399. The next prime is 212423429. The reversal of 212423422 is 224324212.

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 = 212423393 and 212423402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212423429) 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, 233493 + ... + 234400.

It is an arithmetic number, because the mean of its divisors is an integer number (40004937).

Almost surely, 2^212423422 is an apocalyptic number.

212423422 is a deficient number, since it is larger than the sum of its proper divisors (107616074).

212423422 is a wasteful number, since it uses less digits than its factorization.

212423422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468122.

The product of its digits is 1536, while the sum is 22.

The square root of 212423422 is about 14574.7528967046. The cubic root of 212423422 is about 596.6699053467.

Adding to 212423422 its reverse (224324212), we get a palindrome (436747634).

The spelling of 212423422 in words is "two hundred twelve million, four hundred twenty-three thousand, four hundred twenty-two".