124657747481 has 2 divisors, whose sum is σ = 124657747482. Its totient is φ = 124657747480.

The previous prime is 124657747477. The next prime is 124657747523. The reversal of 124657747481 is 184747756421.

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., 110463169600 + 14194577881 = 332360^2 + 119141^2 .

It is an emirp because it is prime and its reverse (184747756421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124657747481 - 2² = 124657747477 is a prime.

It is a super-2 number, since 2×124657747481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (124657747381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62328873740 + 62328873741.

It is an arithmetic number, because the mean of its divisors is an integer number (62328873741).

Almost surely, 2^124657747481 is an apocalyptic number.

It is an amenable number.

124657747481 is a deficient number, since it is larger than the sum of its proper divisors (1).

124657747481 is an equidigital number, since it uses as much as digits as its factorization.

124657747481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10536960, while the sum is 56.

The spelling of 124657747481 in words is "one hundred twenty-four billion, six hundred fifty-seven million, seven hundred forty-seven thousand, four hundred eighty-one".