212302406 has 8 divisors (see below), whose sum is σ = 318819360. Its totient is φ = 106029288.

The previous prime is 212302381. The next prime is 212302423. The reversal of 212302406 is 604203212.

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

It is a congruent number.

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, 58766 + ... + 62273.

It is an arithmetic number, because the mean of its divisors is an integer number (39852420).

Almost surely, 2^212302406 is an apocalyptic number.

212302406 is a deficient number, since it is larger than the sum of its proper divisors (106516954).

212302406 is a wasteful number, since it uses less digits than its factorization.

212302406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121918.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 212302406 is about 14570.6007425912. The cubic root of 212302406 is about 596.5565777284.

Adding to 212302406 its reverse (604203212), we get a palindrome (816505618).

The spelling of 212302406 in words is "two hundred twelve million, three hundred two thousand, four hundred six".