126939005461 has 2 divisors, whose sum is σ = 126939005462. Its totient is φ = 126939005460.

The previous prime is 126939005449. The next prime is 126939005509. The reversal of 126939005461 is 164500939621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106269480100 + 20669525361 = 325990^2 + 143769^2 .

It is a cyclic number.

It is not a de Polignac number, because 126939005461 - 2¹¹ = 126939003413 is a prime.

It is a super-2 number, since 2×126939005461² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126939005261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63469502730 + 63469502731.

It is an arithmetic number, because the mean of its divisors is an integer number (63469502731).

Almost surely, 2^126939005461 is an apocalyptic number.

It is an amenable number.

126939005461 is a deficient number, since it is larger than the sum of its proper divisors (1).

126939005461 is an equidigital number, since it uses as much as digits as its factorization.

126939005461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 126939005461 in words is "one hundred twenty-six billion, nine hundred thirty-nine million, five thousand, four hundred sixty-one".