212420262 has 16 divisors (see below), whose sum is σ = 435202992. Its totient is φ = 69079680.

The previous prime is 212420251. The next prime is 212420279. The reversal of 212420262 is 262024212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431503 + ... + 431994.

It is an arithmetic number, because the mean of its divisors is an integer number (27200187).

Almost surely, 2^212420262 is an apocalyptic number.

212420262 is an abundant number, since it is smaller than the sum of its proper divisors (222782730).

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

212420262 is a wasteful number, since it uses less digits than its factorization.

212420262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863543.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 212420262 is about 14574.6444896608. The cubic root of 212420262 is about 596.6669466550. Note that the first 3 decimals are identical.

Adding to 212420262 its reverse (262024212), we get a palindrome (474444474).

The spelling of 212420262 in words is "two hundred twelve million, four hundred twenty thousand, two hundred sixty-two".