212420030 has 16 divisors (see below), whose sum is σ = 384171984. Its totient is φ = 84564480.

The previous prime is 212420027. The next prime is 212420059. The reversal of 212420030 is 30024212.

It is a junction number, because it is equal to n+sod(n) for n = 212419987 and 212420014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48227 + ... + 52446.

It is an arithmetic number, because the mean of its divisors is an integer number (24010749).

Almost surely, 2^212420030 is an apocalyptic number.

212420030 is a deficient number, since it is larger than the sum of its proper divisors (171751954).

212420030 is a wasteful number, since it uses less digits than its factorization.

212420030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100891.

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

The square root of 212420030 is about 14574.6365306309. The cubic root of 212420030 is about 596.6667294335. Note that the first 3 decimals are identical.

Adding to 212420030 its reverse (30024212), we get a palindrome (242444242).

The spelling of 212420030 in words is "two hundred twelve million, four hundred twenty thousand, thirty".