126001277 has 2 divisors, whose sum is σ = 126001278. Its totient is φ = 126001276.

The previous prime is 126001207. The next prime is 126001279. The reversal of 126001277 is 772100621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119880601 + 6120676 = 10949^2 + 2474^2 .

It is a cyclic number.

It is not a de Polignac number, because 126001277 - 2¹⁰ = 126000253 is a prime.

It is a super-3 number, since 3×126001277³ (a number of 25 digits) contains 333 as substring.

Together with 126001279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126001279) 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, 63000638 + 63000639.

It is an arithmetic number, because the mean of its divisors is an integer number (63000639).

Almost surely, 2^126001277 is an apocalyptic number.

It is an amenable number.

126001277 is a deficient number, since it is larger than the sum of its proper divisors (1).

126001277 is an equidigital number, since it uses as much as digits as its factorization.

126001277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 126001277 is about 11225.0290422787. The cubic root of 126001277 is about 501.3314871366.

Adding to 126001277 its reverse (772100621), we get a palindrome (898101898).

The spelling of 126001277 in words is "one hundred twenty-six million, one thousand, two hundred seventy-seven".