24007421 has 2 divisors, whose sum is σ = 24007422. Its totient is φ = 24007420.

The previous prime is 24007409. The next prime is 24007441. The reversal of 24007421 is 12470042.

It is an a-pointer prime, because the next prime (24007441) can be obtained adding 24007421 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23716900 + 290521 = 4870^2 + 539^2 .

It is a cyclic number.

It is not a de Polignac number, because 24007421 - 2²² = 19813117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24007393 and 24007402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24007441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12003710 + 12003711.

It is an arithmetic number, because the mean of its divisors is an integer number (12003711).

Almost surely, 2^24007421 is an apocalyptic number.

It is an amenable number.

24007421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24007421 is an equidigital number, since it uses as much as digits as its factorization.

24007421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 24007421 is about 4899.7368296675. The cubic root of 24007421 is about 288.4796413701.

Adding to 24007421 its reverse (12470042), we get a palindrome (36477463).

The spelling of 24007421 in words is "twenty-four million, seven thousand, four hundred twenty-one".