30242081 has 4 divisors (see below), whose sum is σ = 31217664. Its totient is φ = 29266500.

The previous prime is 30242071. The next prime is 30242089. The reversal of 30242081 is 18024203.

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: 18024203 = 23 ⋅783661.

It is a cyclic number.

It is not a de Polignac number, because 30242081 - 2¹⁴ = 30225697 is a prime.

It is a super-2 number, since 2×30242081² = 1829166926421122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30242089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487745 + ... + 487806.

It is an arithmetic number, because the mean of its divisors is an integer number (7804416).

Almost surely, 2^30242081 is an apocalyptic number.

30242081 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30242081 is a deficient number, since it is larger than the sum of its proper divisors (975583).

30242081 is an equidigital number, since it uses as much as digits as its factorization.

30242081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975582.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 30242081 is about 5499.2800437876. The cubic root of 30242081 is about 311.5567924949.

Adding to 30242081 its reverse (18024203), we get a palindrome (48266284).

The spelling of 30242081 in words is "thirty million, two hundred forty-two thousand, eighty-one".