126871705 has 8 divisors (see below), whose sum is σ = 156361032. Its totient is φ = 98754048.

The previous prime is 126871699. The next prime is 126871729. The reversal of 126871705 is 507178621.

It can be written as a sum of positive squares in 4 ways, for example, as 69172489 + 57699216 = 8317^2 + 7596^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126871705 - 2⁵ = 126871673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342712 + ... + 343081.

It is an arithmetic number, because the mean of its divisors is an integer number (19545129).

Almost surely, 2^126871705 is an apocalyptic number.

It is an amenable number.

126871705 is a deficient number, since it is larger than the sum of its proper divisors (29489327).

126871705 is an equidigital number, since it uses as much as digits as its factorization.

126871705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685835.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 126871705 is about 11263.7340611362. The cubic root of 126871705 is about 502.4832531567.

The spelling of 126871705 in words is "one hundred twenty-six million, eight hundred seventy-one thousand, seven hundred five".