24194921 has 2 divisors, whose sum is σ = 24194922. Its totient is φ = 24194920.

The previous prime is 24194909. The next prime is 24194941. The reversal of 24194921 is 12949142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13039321 + 11155600 = 3611^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 24194921 - 2¹⁴ = 24178537 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (24194941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12097460 + 12097461.

It is an arithmetic number, because the mean of its divisors is an integer number (12097461).

Almost surely, 2^24194921 is an apocalyptic number.

It is an amenable number.

24194921 is a deficient number, since it is larger than the sum of its proper divisors (1).

24194921 is an equidigital number, since it uses as much as digits as its factorization.

24194921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 24194921 is about 4918.8332966263. The cubic root of 24194921 is about 289.2287114865.

The spelling of 24194921 in words is "twenty-four million, one hundred ninety-four thousand, nine hundred twenty-one".