126982081 has 2 divisors, whose sum is σ = 126982082. Its totient is φ = 126982080.

The previous prime is 126982049. The next prime is 126982087. The reversal of 126982081 is 180289621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126787600 + 194481 = 11260^2 + 441^2 .

It is a cyclic number.

It is not a de Polignac number, because 126982081 - 2⁵ = 126982049 is a prime.

It is a super-2 number, since 2×126982081² = 32248897790181122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126982081.

It is not a weakly prime, because it can be changed into another prime (126982087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63491040 + 63491041.

It is an arithmetic number, because the mean of its divisors is an integer number (63491041).

Almost surely, 2^126982081 is an apocalyptic number.

It is an amenable number.

126982081 is a deficient number, since it is larger than the sum of its proper divisors (1).

126982081 is an equidigital number, since it uses as much as digits as its factorization.

126982081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 126982081 is about 11268.6326144746. The cubic root of 126982081 is about 502.6289279171.

The spelling of 126982081 in words is "one hundred twenty-six million, nine hundred eighty-two thousand, eighty-one".