30420212 has 12 divisors (see below), whose sum is σ = 54108516. Its totient is φ = 14960640.

The previous prime is 30420209. The next prime is 30420227. The reversal of 30420212 is 21202403.

It can be written as a sum of positive squares in 2 ways, for example, as 17272336 + 13147876 = 4156^2 + 3626^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62093 + ... + 62580.

It is an arithmetic number, because the mean of its divisors is an integer number (4509043).

Almost surely, 2^30420212 is an apocalyptic number.

It is an amenable number.

30420212 is a deficient number, since it is larger than the sum of its proper divisors (23688304).

30420212 is a wasteful number, since it uses less digits than its factorization.

30420212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124738 (or 124736 counting only the distinct ones).

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

The square root of 30420212 is about 5515.4521120213. The cubic root of 30420212 is about 312.1673028861.

Adding to 30420212 its reverse (21202403), we get a palindrome (51622615).

The spelling of 30420212 in words is "thirty million, four hundred twenty thousand, two hundred twelve".