30142303 has 4 divisors (see below), whose sum is σ = 31728760. Its totient is φ = 28555848.

The previous prime is 30142297. The next prime is 30142313. The reversal of 30142303 is 30324103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30142303 - 2⁵ = 30142271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793200 + ... + 793237.

It is an arithmetic number, because the mean of its divisors is an integer number (7932190).

Almost surely, 2^30142303 is an apocalyptic number.

30142303 is a deficient number, since it is larger than the sum of its proper divisors (1586457).

30142303 is a wasteful number, since it uses less digits than its factorization.

30142303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586456.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30142303 is about 5490.2006338567. The cubic root of 30142303 is about 311.2137741638.

Adding to 30142303 its reverse (30324103), we get a palindrome (60466406).

The spelling of 30142303 in words is "thirty million, one hundred forty-two thousand, three hundred three".