124434240505513 has 2 divisors, whose sum is σ = 124434240505514. Its totient is φ = 124434240505512.

The previous prime is 124434240505493. The next prime is 124434240505543. The reversal of 124434240505513 is 315505042434421.

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., 72041934013504 + 52392306492009 = 8487752^2 + 7238253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124434240505513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124434240505513.

It is not a weakly prime, because it can be changed into another prime (124434240505543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62217120252756 + 62217120252757.

It is an arithmetic number, because the mean of its divisors is an integer number (62217120252757).

Almost surely, 2^{124434240505513} is an apocalyptic number.

It is an amenable number.

124434240505513 is a deficient number, since it is larger than the sum of its proper divisors (1).

124434240505513 is an equidigital number, since it uses as much as digits as its factorization.

124434240505513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152000, while the sum is 43.

Adding to 124434240505513 its reverse (315505042434421), we get a palindrome (439939282939934).

The spelling of 124434240505513 in words is "one hundred twenty-four trillion, four hundred thirty-four billion, two hundred forty million, five hundred five thousand, five hundred thirteen".