126123073 has 2 divisors, whose sum is σ = 126123074. Its totient is φ = 126123072.

The previous prime is 126122977. The next prime is 126123103. The reversal of 126123073 is 370321621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110187009 + 15936064 = 10497^2 + 3992^2 .

It is a cyclic number.

It is not a de Polignac number, because 126123073 - 2⁹ = 126122561 is a prime.

It is not a weakly prime, because it can be changed into another prime (126123373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63061536 + 63061537.

It is an arithmetic number, because the mean of its divisors is an integer number (63061537).

Almost surely, 2^126123073 is an apocalyptic number.

It is an amenable number.

126123073 is a deficient number, since it is larger than the sum of its proper divisors (1).

126123073 is an equidigital number, since it uses as much as digits as its factorization.

126123073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 126123073 is about 11230.4529294236. The cubic root of 126123073 is about 501.4929683208.

Adding to 126123073 its reverse (370321621), we get a palindrome (496444694).

The spelling of 126123073 in words is "one hundred twenty-six million, one hundred twenty-three thousand, seventy-three".