24642161 has 2 divisors, whose sum is σ = 24642162. Its totient is φ = 24642160.

The previous prime is 24642151. The next prime is 24642173. The reversal of 24642161 is 16124642.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18011536 + 6630625 = 4244^2 + 2575^2 .

It is a cyclic number.

It is not a de Polignac number, because 24642161 - 2⁶ = 24642097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24642161.

It is not a weakly prime, because it can be changed into another prime (24642151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12321080 + 12321081.

It is an arithmetic number, because the mean of its divisors is an integer number (12321081).

Almost surely, 2^24642161 is an apocalyptic number.

It is an amenable number.

24642161 is a deficient number, since it is larger than the sum of its proper divisors (1).

24642161 is an equidigital number, since it uses as much as digits as its factorization.

24642161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 24642161 is about 4964.0871265521. The cubic root of 24642161 is about 290.9999606366. Note that the first 4 decimals are identical.

The spelling of 24642161 in words is "twenty-four million, six hundred forty-two thousand, one hundred sixty-one".