212351242 has 8 divisors (see below), whose sum is σ = 319918500. Its totient is φ = 105711744.

The previous prime is 212351221. The next prime is 212351257. The reversal of 212351242 is 242153212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 212255761 + 95481 = 14569^2 + 309^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231367 + ... + 232282.

Almost surely, 2^212351242 is an apocalyptic number.

212351242 is a deficient number, since it is larger than the sum of its proper divisors (107567258).

212351242 is a wasteful number, since it uses less digits than its factorization.

212351242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463880.

The product of its digits is 960, while the sum is 22.

The square root of 212351242 is about 14572.2764865343. The cubic root of 212351242 is about 596.6023162640.

The spelling of 212351242 in words is "two hundred twelve million, three hundred fifty-one thousand, two hundred forty-two".