212425838 has 32 divisors (see below), whose sum is σ = 343187712. Its totient is φ = 98366400.

The previous prime is 212425831. The next prime is 212425847. The reversal of 212425838 is 838524212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212425798 and 212425807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212425831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307073 + ... + 307763.

It is an arithmetic number, because the mean of its divisors is an integer number (10724616).

Almost surely, 2^212425838 is an apocalyptic number.

212425838 is a deficient number, since it is larger than the sum of its proper divisors (130761874).

212425838 is a wasteful number, since it uses less digits than its factorization.

212425838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its digits is 30720, while the sum is 35.

The square root of 212425838 is about 14574.8357795208. The cubic root of 212425838 is about 596.6721674153.

The spelling of 212425838 in words is "two hundred twelve million, four hundred twenty-five thousand, eight hundred thirty-eight".