123240334247 has 2 divisors, whose sum is σ = 123240334248. Its totient is φ = 123240334246.

The previous prime is 123240334183. The next prime is 123240334267. The reversal of 123240334247 is 742433042321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123240334247 - 2⁶ = 123240334183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123240334267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61620167123 + 61620167124.

It is an arithmetic number, because the mean of its divisors is an integer number (61620167124).

Almost surely, 2^123240334247 is an apocalyptic number.

123240334247 is a deficient number, since it is larger than the sum of its proper divisors (1).

123240334247 is an equidigital number, since it uses as much as digits as its factorization.

123240334247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 35.

Adding to 123240334247 its reverse (742433042321), we get a palindrome (865673376568).

The spelling of 123240334247 in words is "one hundred twenty-three billion, two hundred forty million, three hundred thirty-four thousand, two hundred forty-seven".