212042028 has 24 divisors (see below), whose sum is σ = 539743680. Its totient is φ = 64255120.

The previous prime is 212042027. The next prime is 212042041. The reversal of 212042028 is 820240212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212041995 and 212042013.

It is not an unprimeable number, because it can be changed into a prime (212042023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 803058 + ... + 803321.

It is an arithmetic number, because the mean of its divisors is an integer number (22489320).

Almost surely, 2^212042028 is an apocalyptic number.

It is an amenable number.

212042028 is an abundant number, since it is smaller than the sum of its proper divisors (327701652).

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

212042028 is a wasteful number, since it uses less digits than its factorization.

212042028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606397 (or 1606395 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 212042028 is about 14561.6629544843. The cubic root of 212042028 is about 596.3125959537.

It can be divided in two parts, 21204 and 2028, that added together give a palindrome (23232).

The spelling of 212042028 in words is "two hundred twelve million, forty-two thousand, twenty-eight".