30242421 has 12 divisors (see below), whose sum is σ = 47654880. Its totient is φ = 18328680.

The previous prime is 30242417. The next prime is 30242423. The reversal of 30242421 is 12424203.

30242421 is a `hidden beast` number, since 3 + 0 + 242 + 421 = 666.

It is not a de Polignac number, because 30242421 - 2² = 30242417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30242394 and 30242403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30242423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152641 + ... + 152838.

It is an arithmetic number, because the mean of its divisors is an integer number (3971240).

Almost surely, 2^30242421 is an apocalyptic number.

It is an amenable number.

30242421 is a deficient number, since it is larger than the sum of its proper divisors (17412459).

30242421 is a wasteful number, since it uses less digits than its factorization.

30242421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305496 (or 305493 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 30242421 is about 5499.3109568381. The cubic root of 30242421 is about 311.5579600613.

Adding to 30242421 its reverse (12424203), we get a palindrome (42666624).

It can be divided in two parts, 3024 and 2421, that added together give a palindrome (5445).

The spelling of 30242421 in words is "thirty million, two hundred forty-two thousand, four hundred twenty-one".