126776491 has 2 divisors, whose sum is σ = 126776492. Its totient is φ = 126776490.

The previous prime is 126776473. The next prime is 126776509. The reversal of 126776491 is 194677621.

It is a balanced prime because it is at equal distance from previous prime (126776473) and next prime (126776509).

It is a cyclic number.

It is not a de Polignac number, because 126776491 - 2⁵ = 126776459 is a prime.

It is not a weakly prime, because it can be changed into another prime (126776431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63388245 + 63388246.

It is an arithmetic number, because the mean of its divisors is an integer number (63388246).

Almost surely, 2^126776491 is an apocalyptic number.

126776491 is a deficient number, since it is larger than the sum of its proper divisors (1).

126776491 is an equidigital number, since it uses as much as digits as its factorization.

126776491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 126776491 is about 11259.5066943450. The cubic root of 126776491 is about 502.3575213820.

The spelling of 126776491 in words is "one hundred twenty-six million, seven hundred seventy-six thousand, four hundred ninety-one".