24297421 has 2 divisors, whose sum is σ = 24297422. Its totient is φ = 24297420.

The previous prime is 24297401. The next prime is 24297443. The reversal of 24297421 is 12479242.

24297421 = 3485² + 3486².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12152196 + 12145225 = 3486^2 + 3485^2 .

It is a cyclic number.

It is not a de Polignac number, because 24297421 - 2¹³ = 24289229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24297401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12148710 + 12148711.

It is an arithmetic number, because the mean of its divisors is an integer number (12148711).

Almost surely, 2^24297421 is an apocalyptic number.

24297421 is the 3486-th centered square number.

It is an amenable number.

24297421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24297421 is an equidigital number, since it uses as much as digits as its factorization.

24297421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 24297421 is about 4929.2414223692. The cubic root of 24297421 is about 289.6365681174.

The spelling of 24297421 in words is "twenty-four million, two hundred ninety-seven thousand, four hundred twenty-one".