30261421 has 4 divisors (see below), whose sum is σ = 30713152. Its totient is φ = 29809692.

The previous prime is 30261401. The next prime is 30261431. The reversal of 30261421 is 12416203.

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.

It is a cyclic number.

It is not a de Polignac number, because 30261421 - 2⁵ = 30261389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30261401) 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, 225765 + ... + 225898.

It is an arithmetic number, because the mean of its divisors is an integer number (7678288).

Almost surely, 2^30261421 is an apocalyptic number.

It is an amenable number.

30261421 is a deficient number, since it is larger than the sum of its proper divisors (451731).

30261421 is an equidigital number, since it uses as much as digits as its factorization.

30261421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451730.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30261421 is about 5501.0381747448. The cubic root of 30261421 is about 311.6231925152.

Adding to 30261421 its reverse (12416203), we get a palindrome (42677624).

The spelling of 30261421 in words is "thirty million, two hundred sixty-one thousand, four hundred twenty-one".