126405764 has 12 divisors (see below), whose sum is σ = 227189004. Its totient is φ = 61494624.

The previous prime is 126405757. The next prime is 126405791. The reversal of 126405764 is 467504621.

It can be written as a sum of positive squares in 2 ways, for example, as 104857600 + 21548164 = 10240^2 + 4642^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 426899 + ... + 427194.

It is an arithmetic number, because the mean of its divisors is an integer number (18932417).

Almost surely, 2^126405764 is an apocalyptic number.

It is an amenable number.

126405764 is a deficient number, since it is larger than the sum of its proper divisors (100783240).

126405764 is a wasteful number, since it uses less digits than its factorization.

126405764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854134 (or 854132 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 126405764 is about 11243.0317975180. The cubic root of 126405764 is about 501.8673691825.

The spelling of 126405764 in words is "one hundred twenty-six million, four hundred five thousand, seven hundred sixty-four".