126277273 has 2 divisors, whose sum is σ = 126277274. Its totient is φ = 126277272.

The previous prime is 126277271. The next prime is 126277289. The reversal of 126277273 is 372772621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108409744 + 17867529 = 10412^2 + 4227^2 .

It is a cyclic number.

It is not a de Polignac number, because 126277273 - 2¹ = 126277271 is a prime.

Together with 126277271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126277271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63138636 + 63138637.

It is an arithmetic number, because the mean of its divisors is an integer number (63138637).

Almost surely, 2^126277273 is an apocalyptic number.

It is an amenable number.

126277273 is a deficient number, since it is larger than the sum of its proper divisors (1).

126277273 is an equidigital number, since it uses as much as digits as its factorization.

126277273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 37.

The square root of 126277273 is about 11237.3160941570. The cubic root of 126277273 is about 501.6972627459.

It can be divided in two parts, 12627 and 7273, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 126277273 in words is "one hundred twenty-six million, two hundred seventy-seven thousand, two hundred seventy-three".