30142133 has 4 divisors (see below), whose sum is σ = 34448160. Its totient is φ = 25836108.

The previous prime is 30142129. The next prime is 30142153. The reversal of 30142133 is 33124103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33124103 = 1277 ⋅25939.

It is a cyclic number.

It is not a de Polignac number, because 30142133 - 2² = 30142129 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 (30142103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2153003 + ... + 2153016.

It is an arithmetic number, because the mean of its divisors is an integer number (8612040).

Almost surely, 2^30142133 is an apocalyptic number.

It is an amenable number.

30142133 is a deficient number, since it is larger than the sum of its proper divisors (4306027).

30142133 is an equidigital number, since it uses as much as digits as its factorization.

30142133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306026.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 30142133 is about 5490.1851517048. The cubic root of 30142133 is about 311.2131890897.

Adding to 30142133 its reverse (33124103), we get a palindrome (63266236).

The spelling of 30142133 in words is "thirty million, one hundred forty-two thousand, one hundred thirty-three".