123401520097 has 2 divisors, whose sum is σ = 123401520098. Its totient is φ = 123401520096.

The previous prime is 123401520091. The next prime is 123401520119. The reversal of 123401520097 is 790025104321.

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., 90230547456 + 33170972641 = 300384^2 + 182129^2 .

It is a cyclic number.

It is not a de Polignac number, because 123401520097 - 2²³ = 123393131489 is a prime.

It is not a weakly prime, because it can be changed into another prime (123401520091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61700760048 + 61700760049.

It is an arithmetic number, because the mean of its divisors is an integer number (61700760049).

Almost surely, 2^123401520097 is an apocalyptic number.

It is an amenable number.

123401520097 is a deficient number, since it is larger than the sum of its proper divisors (1).

123401520097 is an equidigital number, since it uses as much as digits as its factorization.

123401520097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 123401520097 in words is "one hundred twenty-three billion, four hundred one million, five hundred twenty thousand, ninety-seven".