30142033 has 4 divisors (see below), whose sum is σ = 30205440. Its totient is φ = 30078628.

The previous prime is 30142009. The next prime is 30142039. The reversal of 30142033 is 33024103.

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: 33024103 = 7 ⋅4717729.

It is a cyclic number.

It is not a de Polignac number, because 30142033 - 2²¹ = 28044881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30141998 and 30142016.

It is not an unprimeable number, because it can be changed into a prime (30142039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30985 + ... + 31942.

It is an arithmetic number, because the mean of its divisors is an integer number (7551360).

Almost surely, 2^30142033 is an apocalyptic number.

It is an amenable number.

30142033 is a deficient number, since it is larger than the sum of its proper divisors (63407).

30142033 is an equidigital number, since it uses as much as digits as its factorization.

30142033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63406.

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

The square root of 30142033 is about 5490.1760445363. The cubic root of 30142033 is about 311.2128449275.

Adding to 30142033 its reverse (33024103), we get a palindrome (63166136).

The spelling of 30142033 in words is "thirty million, one hundred forty-two thousand, thirty-three".