30240121 has 2 divisors, whose sum is σ = 30240122. Its totient is φ = 30240120.

The previous prime is 30240113. The next prime is 30240131. The reversal of 30240121 is 12104203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20070400 + 10169721 = 4480^2 + 3189^2 .

It is a cyclic number.

It is not a de Polignac number, because 30240121 - 2³ = 30240113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30240131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15120060 + 15120061.

It is an arithmetic number, because the mean of its divisors is an integer number (15120061).

Almost surely, 2^30240121 is an apocalyptic number.

It is an amenable number.

30240121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30240121 is an equidigital number, since it uses as much as digits as its factorization.

30240121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30240121 is about 5499.1018357546. The cubic root of 30240121 is about 311.5500616474.

Adding to 30240121 its reverse (12104203), we get a palindrome (42344324).

The spelling of 30240121 in words is "thirty million, two hundred forty thousand, one hundred twenty-one".