123242213515 has 8 divisors (see below), whose sum is σ = 147893790240. Its totient is φ = 98591681472.

The previous prime is 123242213513. The next prime is 123242213533. The reversal of 123242213515 is 515312242321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123242213515 - 2¹ = 123242213513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123242213513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27346 + ... + 497224.

It is an arithmetic number, because the mean of its divisors is an integer number (18486723780).

Almost surely, 2^123242213515 is an apocalyptic number.

123242213515 is a deficient number, since it is larger than the sum of its proper divisors (24651576725).

123242213515 is an equidigital number, since it uses as much as digits as its factorization.

123242213515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522341.

The product of its digits is 14400, while the sum is 31.

Adding to 123242213515 its reverse (515312242321), we get a palindrome (638554455836).

The spelling of 123242213515 in words is "one hundred twenty-three billion, two hundred forty-two million, two hundred thirteen thousand, five hundred fifteen".