126881539 has 2 divisors, whose sum is σ = 126881540. Its totient is φ = 126881538.

The previous prime is 126881537. The next prime is 126881549. The reversal of 126881539 is 935188621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126881539 - 2¹ = 126881537 is a prime.

Together with 126881537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 126881495 and 126881504.

It is not a weakly prime, because it can be changed into another prime (126881537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63440769 + 63440770.

It is an arithmetic number, because the mean of its divisors is an integer number (63440770).

Almost surely, 2^126881539 is an apocalyptic number.

126881539 is a deficient number, since it is larger than the sum of its proper divisors (1).

126881539 is an equidigital number, since it uses as much as digits as its factorization.

126881539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 43.

The square root of 126881539 is about 11264.1705864214. The cubic root of 126881539 is about 502.4962355435.

The spelling of 126881539 in words is "one hundred twenty-six million, eight hundred eighty-one thousand, five hundred thirty-nine".