30043421 has 4 divisors (see below), whose sum is σ = 30610332. Its totient is φ = 29476512.

The previous prime is 30043399. The next prime is 30043439. The reversal of 30043421 is 12434003.

30043421 = 479² + 480² + ... + 584².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23863225 + 6180196 = 4885^2 + 2486^2 .

It is a cyclic number.

It is not a de Polignac number, because 30043421 - 2⁶ = 30043357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30043421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30043441) 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, 283376 + ... + 283481.

It is an arithmetic number, because the mean of its divisors is an integer number (7652583).

Almost surely, 2^30043421 is an apocalyptic number.

It is an amenable number.

30043421 is a deficient number, since it is larger than the sum of its proper divisors (566911).

30043421 is an equidigital number, since it uses as much as digits as its factorization.

30043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566910.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30043421 is about 5481.1879186906. The cubic root of 30043421 is about 310.8730884870.

Adding to 30043421 its reverse (12434003), we get a palindrome (42477424).

The spelling of 30043421 in words is "thirty million, forty-three thousand, four hundred twenty-one".