126955771 has 4 divisors (see below), whose sum is σ = 127162152. Its totient is φ = 126749392.

The previous prime is 126955733. The next prime is 126955783. The reversal of 126955771 is 177559621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177559621 = 157 ⋅1130953.

It is a cyclic number.

It is not a de Polignac number, because 126955771 - 2⁹ = 126955259 is a prime.

It is a super-2 number, since 2×126955771² = 32235535580408882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126956771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102265 + ... + 103498.

It is an arithmetic number, because the mean of its divisors is an integer number (31790538).

Almost surely, 2^126955771 is an apocalyptic number.

126955771 is a deficient number, since it is larger than the sum of its proper divisors (206381).

126955771 is an equidigital number, since it uses as much as digits as its factorization.

126955771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206380.

The product of its digits is 132300, while the sum is 43.

The square root of 126955771 is about 11267.4651541507. The cubic root of 126955771 is about 502.5942115213.

The spelling of 126955771 in words is "one hundred twenty-six million, nine hundred fifty-five thousand, seven hundred seventy-one".