30142305 has 24 divisors (see below), whose sum is σ = 54520128. Its totient is φ = 15376416.

The previous prime is 30142297. The next prime is 30142313. The reversal of 30142305 is 50324103.

It is an interprime number because it is at equal distance from previous prime (30142297) and next prime (30142313).

It is not a de Polignac number, because 30142305 - 2³ = 30142297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13527 + ... + 15596.

It is an arithmetic number, because the mean of its divisors is an integer number (2271672).

Almost surely, 2^30142305 is an apocalyptic number.

It is an amenable number.

30142305 is a deficient number, since it is larger than the sum of its proper divisors (24377823).

30142305 is a wasteful number, since it uses less digits than its factorization.

30142305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29157 (or 29154 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30142305 is about 5490.2008159994. The cubic root of 30142305 is about 311.2137810470.

Adding to 30142305 its reverse (50324103), we get a palindrome (80466408).

The spelling of 30142305 in words is "thirty million, one hundred forty-two thousand, three hundred five".