124221242137 has 2 divisors, whose sum is σ = 124221242138. Its totient is φ = 124221242136.

The previous prime is 124221242081. The next prime is 124221242141. The reversal of 124221242137 is 731242122421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80915215936 + 43306026201 = 284456^2 + 208101^2 .

It is a cyclic number.

It is not a de Polignac number, because 124221242137 - 2¹⁹ = 124220717849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124221242099 and 124221242108.

It is not a weakly prime, because it can be changed into another prime (124221242177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62110621068 + 62110621069.

It is an arithmetic number, because the mean of its divisors is an integer number (62110621069).

Almost surely, 2^124221242137 is an apocalyptic number.

It is an amenable number.

124221242137 is a deficient number, since it is larger than the sum of its proper divisors (1).

124221242137 is an equidigital number, since it uses as much as digits as its factorization.

124221242137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 31.

Adding to 124221242137 its reverse (731242122421), we get a palindrome (855463364558).

The spelling of 124221242137 in words is "one hundred twenty-four billion, two hundred twenty-one million, two hundred forty-two thousand, one hundred thirty-seven".