123201346529 has 2 divisors, whose sum is σ = 123201346530. Its totient is φ = 123201346528.

The previous prime is 123201346397. The next prime is 123201346549. The reversal of 123201346529 is 925643102321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70150819600 + 53050526929 = 264860^2 + 230327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123201346529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123201346492 and 123201346501.

It is not a weakly prime, because it can be changed into another prime (123201346549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61600673264 + 61600673265.

It is an arithmetic number, because the mean of its divisors is an integer number (61600673265).

Almost surely, 2^123201346529 is an apocalyptic number.

It is an amenable number.

123201346529 is a deficient number, since it is larger than the sum of its proper divisors (1).

123201346529 is an equidigital number, since it uses as much as digits as its factorization.

123201346529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 123201346529 in words is "one hundred twenty-three billion, two hundred one million, three hundred forty-six thousand, five hundred twenty-nine".