123207641 has 2 divisors, whose sum is σ = 123207642. Its totient is φ = 123207640.

The previous prime is 123207613. The next prime is 123207677. The reversal of 123207641 is 146702321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95160025 + 28047616 = 9755^2 + 5296^2 .

It is an emirp because it is prime and its reverse (146702321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123207641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123207641.

It is not a weakly prime, because it can be changed into another prime (123207691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61603820 + 61603821.

It is an arithmetic number, because the mean of its divisors is an integer number (61603821).

Almost surely, 2^123207641 is an apocalyptic number.

It is an amenable number.

123207641 is a deficient number, since it is larger than the sum of its proper divisors (1).

123207641 is an equidigital number, since it uses as much as digits as its factorization.

123207641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 123207641 is about 11099.8937382301. The cubic root of 123207641 is about 497.5986737268.

Adding to 123207641 its reverse (146702321), we get a palindrome (269909962).

The spelling of 123207641 in words is "one hundred twenty-three million, two hundred seven thousand, six hundred forty-one".