123240010517 has 8 divisors (see below), whose sum is σ = 139705275360. Its totient is φ = 107772640560.

The previous prime is 123240010489. The next prime is 123240010547. The reversal of 123240010517 is 715010042321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123240010517 - 2⁸ = 123240010261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123240010547) 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 in 7 ways as a sum of consecutive naturals, for example, 249473459 + ... + 249473952.

It is an arithmetic number, because the mean of its divisors is an integer number (17463159420).

Almost surely, 2^123240010517 is an apocalyptic number.

It is an amenable number.

123240010517 is a deficient number, since it is larger than the sum of its proper divisors (16465264843).

123240010517 is a wasteful number, since it uses less digits than its factorization.

123240010517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498947443.

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 123240010517 its reverse (715010042321), we get a palindrome (838250052838).

The spelling of 123240010517 in words is "one hundred twenty-three billion, two hundred forty million, ten thousand, five hundred seventeen".