126502073 has 2 divisors, whose sum is σ = 126502074. Its totient is φ = 126502072.

The previous prime is 126502069. The next prime is 126502081. The reversal of 126502073 is 370205621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90117049 + 36385024 = 9493^2 + 6032^2 .

It is a cyclic number.

It is not a de Polignac number, because 126502073 - 2² = 126502069 is a prime.

It is not a weakly prime, because it can be changed into another prime (126502273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63251036 + 63251037.

It is an arithmetic number, because the mean of its divisors is an integer number (63251037).

Almost surely, 2^126502073 is an apocalyptic number.

It is an amenable number.

126502073 is a deficient number, since it is larger than the sum of its proper divisors (1).

126502073 is an equidigital number, since it uses as much as digits as its factorization.

126502073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 126502073 is about 11247.3140349152. The cubic root of 126502073 is about 501.9947950022.

Adding to 126502073 its reverse (370205621), we get a palindrome (496707694).

The spelling of 126502073 in words is "one hundred twenty-six million, five hundred two thousand, seventy-three".