212605422 has 16 divisors (see below), whose sum is σ = 443698560. Its totient is φ = 67787192.

The previous prime is 212605403. The next prime is 212605423. The reversal of 212605422 is 224506212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212605392 and 212605401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212605423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770172 + ... + 770447.

It is an arithmetic number, because the mean of its divisors is an integer number (27731160).

Almost surely, 2^212605422 is an apocalyptic number.

212605422 is an abundant number, since it is smaller than the sum of its proper divisors (231093138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212605422 is a wasteful number, since it uses less digits than its factorization.

212605422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540647.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 212605422 is about 14580.9952335223. The cubic root of 212605422 is about 596.8402615200.

The spelling of 212605422 in words is "two hundred twelve million, six hundred five thousand, four hundred twenty-two".