126504881 has 2 divisors, whose sum is σ = 126504882. Its totient is φ = 126504880.

The previous prime is 126504863. The next prime is 126504901. The reversal of 126504881 is 188405621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126337600 + 167281 = 11240^2 + 409^2 .

It is an emirp because it is prime and its reverse (188405621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126504881 - 2⁶ = 126504817 is a prime.

It is a super-2 number, since 2×126504881² = 32006969833648322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (126504811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63252440 + 63252441.

It is an arithmetic number, because the mean of its divisors is an integer number (63252441).

Almost surely, 2^126504881 is an apocalyptic number.

It is an amenable number.

126504881 is a deficient number, since it is larger than the sum of its proper divisors (1).

126504881 is an equidigital number, since it uses as much as digits as its factorization.

126504881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 126504881 is about 11247.4388640259. The cubic root of 126504881 is about 501.9985092785.

The spelling of 126504881 in words is "one hundred twenty-six million, five hundred four thousand, eight hundred eighty-one".