126904705 has 24 divisors (see below), whose sum is σ = 163425600. Its totient is φ = 94340160.

The previous prime is 126904703. The next prime is 126904721. The reversal of 126904705 is 507409621.

It is not a de Polignac number, because 126904705 - 2¹ = 126904703 is a prime.

It is a super-2 number, since 2×126904705² = 32209608302274050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126904703) 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 in 23 ways as a sum of consecutive naturals, for example, 353316 + ... + 353674.

It is an arithmetic number, because the mean of its divisors is an integer number (6809400).

Almost surely, 2^126904705 is an apocalyptic number.

It is an amenable number.

126904705 is a deficient number, since it is larger than the sum of its proper divisors (36520895).

126904705 is an equidigital number, since it uses as much as digits as its factorization.

126904705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 126904705 is about 11265.1988442282. The cubic root of 126904705 is about 502.5268155620.

The spelling of 126904705 in words is "one hundred twenty-six million, nine hundred four thousand, seven hundred five".