123003641 has 2 divisors, whose sum is σ = 123003642. Its totient is φ = 123003640.

The previous prime is 123003637. The next prime is 123003659. The reversal of 123003641 is 146300321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86955625 + 36048016 = 9325^2 + 6004^2 .

It is a cyclic number.

It is not a de Polignac number, because 123003641 - 2² = 123003637 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 (123003341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61501820 + 61501821.

It is an arithmetic number, because the mean of its divisors is an integer number (61501821).

Almost surely, 2^123003641 is an apocalyptic number.

It is an amenable number.

123003641 is a deficient number, since it is larger than the sum of its proper divisors (1).

123003641 is an equidigital number, since it uses as much as digits as its factorization.

123003641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 123003641 is about 11090.7006541517. The cubic root of 123003641 is about 497.3238904286.

Adding to 123003641 its reverse (146300321), we get a palindrome (269303962).

The spelling of 123003641 in words is "one hundred twenty-three million, three thousand, six hundred forty-one".