126776473 has 2 divisors, whose sum is σ = 126776474. Its totient is φ = 126776472.

The previous prime is 126776471. The next prime is 126776491. The reversal of 126776473 is 374677621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86174089 + 40602384 = 9283^2 + 6372^2 .

It is an emirp because it is prime and its reverse (374677621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126776473 - 2¹ = 126776471 is a prime.

Together with 126776471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126776471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63388236 + 63388237.

It is an arithmetic number, because the mean of its divisors is an integer number (63388237).

Almost surely, 2^126776473 is an apocalyptic number.

It is an amenable number.

126776473 is a deficient number, since it is larger than the sum of its proper divisors (1).

126776473 is an equidigital number, since it uses as much as digits as its factorization.

126776473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 43.

The square root of 126776473 is about 11259.5058950204. The cubic root of 126776473 is about 502.3574976068.

The spelling of 126776473 in words is "one hundred twenty-six million, seven hundred seventy-six thousand, four hundred seventy-three".