30042273 has 4 divisors (see below), whose sum is σ = 40056368. Its totient is φ = 20028180.

The previous prime is 30042263. The next prime is 30042323. The reversal of 30042273 is 37224003.

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: 37224003 = 3 ⋅12408001.

It is not a de Polignac number, because 30042273 - 2⁹ = 30041761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30042203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5007043 + ... + 5007048.

It is an arithmetic number, because the mean of its divisors is an integer number (10014092).

Almost surely, 2^30042273 is an apocalyptic number.

It is an amenable number.

30042273 is a deficient number, since it is larger than the sum of its proper divisors (10014095).

30042273 is a wasteful number, since it uses less digits than its factorization.

30042273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10014094.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 30042273 is about 5481.0831958656. The cubic root of 30042273 is about 310.8691288086.

Adding to 30042273 its reverse (37224003), we get a palindrome (67266276).

The spelling of 30042273 in words is "thirty million, forty-two thousand, two hundred seventy-three".