30421423 has 2 divisors, whose sum is σ = 30421424. Its totient is φ = 30421422.

The previous prime is 30421411. The next prime is 30421427. The reversal of 30421423 is 32412403.

It is a strong prime.

It is an emirp because it is prime and its reverse (32412403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30421423 - 2¹³ = 30413231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30421423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30421427) 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 as a sum of consecutive naturals, namely, 15210711 + 15210712.

It is an arithmetic number, because the mean of its divisors is an integer number (15210712).

Almost surely, 2^30421423 is an apocalyptic number.

30421423 is a deficient number, since it is larger than the sum of its proper divisors (1).

30421423 is an equidigital number, since it uses as much as digits as its factorization.

30421423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30421423 is about 5515.5618934067. The cubic root of 30421423 is about 312.1714451933.

Adding to 30421423 its reverse (32412403), we get a palindrome (62833826).

It can be divided in two parts, 3042 and 1423, that added together give a triangular number (4465 = T₉₄).

The spelling of 30421423 in words is "thirty million, four hundred twenty-one thousand, four hundred twenty-three".