212403020 has 12 divisors (see below), whose sum is σ = 446046384. Its totient is φ = 84961200.

The previous prime is 212403017. The next prime is 212403029. The reversal of 212403020 is 20304212.

It is a junction number, because it is equal to n+sod(n) for n = 212402986 and 212403004.

It is not an unprimeable number, because it can be changed into a prime (212403029) 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 3 ways as a sum of consecutive naturals, for example, 5310056 + ... + 5310095.

It is an arithmetic number, because the mean of its divisors is an integer number (37170532).

Almost surely, 2^212403020 is an apocalyptic number.

212403020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212403020 is an abundant number, since it is smaller than the sum of its proper divisors (233643364).

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

212403020 is a wasteful number, since it uses less digits than its factorization.

212403020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10620160 (or 10620158 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 212403020 is about 14574.0529709481. The cubic root of 212403020 is about 596.6508025425.

Adding to 212403020 its reverse (20304212), we get a palindrome (232707232).

The spelling of 212403020 in words is "two hundred twelve million, four hundred three thousand, twenty".