30142222 has 8 divisors (see below), whose sum is σ = 49323672. Its totient is φ = 13701000.

The previous prime is 30142201. The next prime is 30142237. The reversal of 30142222 is 22224103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 30142196 and 30142205.

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, 685029 + ... + 685072.

It is an arithmetic number, because the mean of its divisors is an integer number (6165459).

Almost surely, 2^30142222 is an apocalyptic number.

30142222 is a deficient number, since it is larger than the sum of its proper divisors (19181450).

30142222 is a wasteful number, since it uses less digits than its factorization.

30142222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370114.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 30142222 is about 5490.1932570721. The cubic root of 30142222 is about 311.2134953935.

Adding to 30142222 its reverse (22224103), we get a palindrome (52366325).

The spelling of 30142222 in words is "thirty million, one hundred forty-two thousand, two hundred twenty-two".