126923777 has 2 divisors, whose sum is σ = 126923778. Its totient is φ = 126923776.

The previous prime is 126923651. The next prime is 126923779. The reversal of 126923777 is 777329621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96904336 + 30019441 = 9844^2 + 5479^2 .

It is a cyclic number.

It is not a de Polignac number, because 126923777 - 2²⁰ = 125875201 is a prime.

It is a super-2 number, since 2×126923777² = 32219290335891458, which contains 22 as substring.

Together with 126923779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126923779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63461888 + 63461889.

It is an arithmetic number, because the mean of its divisors is an integer number (63461889).

Almost surely, 2^126923777 is an apocalyptic number.

It is an amenable number.

126923777 is a deficient number, since it is larger than the sum of its proper divisors (1).

126923777 is an equidigital number, since it uses as much as digits as its factorization.

126923777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 44.

The square root of 126923777 is about 11266.0453132410. The cubic root of 126923777 is about 502.5519885486.

The spelling of 126923777 in words is "one hundred twenty-six million, nine hundred twenty-three thousand, seven hundred seventy-seven".