124340665247 has 2 divisors, whose sum is σ = 124340665248. Its totient is φ = 124340665246.

The previous prime is 124340665223. The next prime is 124340665249. The reversal of 124340665247 is 742566043421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124340665247 is a prime.

Together with 124340665249, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 124340665198 and 124340665207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124340665249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62170332623 + 62170332624.

It is an arithmetic number, because the mean of its divisors is an integer number (62170332624).

Almost surely, 2^124340665247 is an apocalyptic number.

124340665247 is a deficient number, since it is larger than the sum of its proper divisors (1).

124340665247 is an equidigital number, since it uses as much as digits as its factorization.

124340665247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 124340665247 in words is "one hundred twenty-four billion, three hundred forty million, six hundred sixty-five thousand, two hundred forty-seven".