126171617 has 16 divisors (see below), whose sum is σ = 149166528. Its totient is φ = 105209280.

The previous prime is 126171599. The next prime is 126171623. The reversal of 126171617 is 716171621.

It is not a de Polignac number, because 126171617 - 2⁶ = 126171553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126171697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20603 + ... + 26015.

It is an arithmetic number, because the mean of its divisors is an integer number (9322908).

Almost surely, 2^126171617 is an apocalyptic number.

It is an amenable number.

126171617 is a deficient number, since it is larger than the sum of its proper divisors (22994911).

126171617 is a wasteful number, since it uses less digits than its factorization.

126171617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600.

The product of its digits is 3528, while the sum is 32.

The square root of 126171617 is about 11232.6139878481. The cubic root of 126171617 is about 501.5573005941.

The spelling of 126171617 in words is "one hundred twenty-six million, one hundred seventy-one thousand, six hundred seventeen".