123302261 has 2 divisors, whose sum is σ = 123302262. Its totient is φ = 123302260.

The previous prime is 123302243. The next prime is 123302317. The reversal of 123302261 is 162203321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74218225 + 49084036 = 8615^2 + 7006^2 .

It is a cyclic number.

It is not a de Polignac number, because 123302261 - 2¹⁸ = 123040117 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 (123302161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61651130 + 61651131.

It is an arithmetic number, because the mean of its divisors is an integer number (61651131).

Almost surely, 2^123302261 is an apocalyptic number.

It is an amenable number.

123302261 is a deficient number, since it is larger than the sum of its proper divisors (1).

123302261 is an equidigital number, since it uses as much as digits as its factorization.

123302261 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 123302261 is about 11104.1551231960. The cubic root of 123302261 is about 497.7260217239.

Adding to 123302261 its reverse (162203321), we get a palindrome (285505582).

The spelling of 123302261 in words is "one hundred twenty-three million, three hundred two thousand, two hundred sixty-one".