30142212 has 12 divisors (see below), whose sum is σ = 70331856. Its totient is φ = 10047400.

The previous prime is 30142201. The next prime is 30142237. The reversal of 30142212 is 21224103.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 30142191 and 30142200.

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, 1255914 + ... + 1255937.

It is an arithmetic number, because the mean of its divisors is an integer number (5860988).

Almost surely, 2^30142212 is an apocalyptic number.

It is an amenable number.

30142212 is an abundant number, since it is smaller than the sum of its proper divisors (40189644).

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

30142212 is a wasteful number, since it uses less digits than its factorization.

30142212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511858 (or 2511856 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 30142212 is about 5490.1923463573. The cubic root of 30142212 is about 311.2134609774.

Adding to 30142212 its reverse (21224103), we get a palindrome (51366315).

The spelling of 30142212 in words is "thirty million, one hundred forty-two thousand, two hundred twelve".