124240728841 has 2 divisors, whose sum is σ = 124240728842. Its totient is φ = 124240728840.

The previous prime is 124240728803. The next prime is 124240728847. The reversal of 124240728841 is 148827042421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69487068816 + 54753660025 = 263604^2 + 233995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124240728841 is a prime.

It is not a weakly prime, because it can be changed into another prime (124240728847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62120364420 + 62120364421.

It is an arithmetic number, because the mean of its divisors is an integer number (62120364421).

Almost surely, 2^124240728841 is an apocalyptic number.

It is an amenable number.

124240728841 is a deficient number, since it is larger than the sum of its proper divisors (1).

124240728841 is an equidigital number, since it uses as much as digits as its factorization.

124240728841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 229376, while the sum is 43.

The spelling of 124240728841 in words is "one hundred twenty-four billion, two hundred forty million, seven hundred twenty-eight thousand, eight hundred forty-one".