402212305 has 16 divisors (see below), whose sum is σ = 533203200. Its totient is φ = 288812160.

The previous prime is 402212303. The next prime is 402212329. The reversal of 402212305 is 503212204.

It is not a de Polignac number, because 402212305 - 2¹ = 402212303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402212303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41940 + ... + 50629.

It is an arithmetic number, because the mean of its divisors is an integer number (33325200).

Almost surely, 2^402212305 is an apocalyptic number.

It is an amenable number.

402212305 is a deficient number, since it is larger than the sum of its proper divisors (130990895).

402212305 is a wasteful number, since it uses less digits than its factorization.

402212305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92664.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 402212305 is about 20055.2313624151. The cubic root of 402212305 is about 738.1621700104.

Adding to 402212305 its reverse (503212204), we get a palindrome (905424509).

The spelling of 402212305 in words is "four hundred two million, two hundred twelve thousand, three hundred five".