212442020 has 48 divisors (see below), whose sum is σ = 519499008. Its totient is φ = 71460480.

The previous prime is 212442001. The next prime is 212442029. The reversal of 212442020 is 20244212.

It is a happy number.

212442020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212442020² = 90263223723360800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212442020.

It is not an unprimeable number, because it can be changed into a prime (212442029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6896 + ... + 21735.

It is an arithmetic number, because the mean of its divisors is an integer number (10822896).

Almost surely, 2^212442020 is an apocalyptic number.

212442020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212442020 is an abundant number, since it is smaller than the sum of its proper divisors (307056988).

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

212442020 is a wasteful number, since it uses less digits than its factorization.

212442020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28700 (or 28698 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 212442020 is about 14575.3909038489. The cubic root of 212442020 is about 596.6873179637.

Adding to 212442020 its reverse (20244212), we get a palindrome (232686232).

It can be divided in two parts, 2124 and 42020, that added together give a palindrome (44144).

The spelling of 212442020 in words is "two hundred twelve million, four hundred forty-two thousand, twenty".