30320142 has 8 divisors (see below), whose sum is σ = 60640296. Its totient is φ = 10106712.

The previous prime is 30320137. The next prime is 30320161. The reversal of 30320142 is 24102303.

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

30320142 is an admirable number.

It is a super-2 number, since 2×30320142² = 1838622021800328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526673 + ... + 2526684.

It is an arithmetic number, because the mean of its divisors is an integer number (7580037).

Almost surely, 2^30320142 is an apocalyptic number.

30320142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30320142 is a wasteful number, since it uses less digits than its factorization.

30320142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053362.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30320142 is about 5506.3728533400. The cubic root of 30320142 is about 311.8246261293.

Adding to 30320142 its reverse (24102303), we get a palindrome (54422445).

The spelling of 30320142 in words is "thirty million, three hundred twenty thousand, one hundred forty-two".