24672421 has 2 divisors, whose sum is σ = 24672422. Its totient is φ = 24672420.

The previous prime is 24672419. The next prime is 24672437. The reversal of 24672421 is 12427642.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15124321 + 9548100 = 3889^2 + 3090^2 .

It is a cyclic number.

It is not a de Polignac number, because 24672421 - 2¹ = 24672419 is a prime.

Together with 24672419, it forms a pair of twin primes.

It is equal to p_1546705 and since 24672421 and 1546705 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24672421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24672481) 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, 12336210 + 12336211.

It is an arithmetic number, because the mean of its divisors is an integer number (12336211).

Almost surely, 2^24672421 is an apocalyptic number.

It is an amenable number.

24672421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24672421 is an equidigital number, since it uses as much as digits as its factorization.

24672421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 24672421 is about 4967.1340831510. The cubic root of 24672421 is about 291.1190256391.

The spelling of 24672421 in words is "twenty-four million, six hundred seventy-two thousand, four hundred twenty-one".