126741677 has 4 divisors (see below), whose sum is σ = 126764220. Its totient is φ = 126719136.

The previous prime is 126741649. The next prime is 126741691. The reversal of 126741677 is 776147621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 776147621 = 131 ⋅5924791.

It can be written as a sum of positive squares in 2 ways, for example, as 72777961 + 53963716 = 8531^2 + 7346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126741677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126741877) 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 in 3 ways as a sum of consecutive naturals, for example, 4823 + ... + 16635.

It is an arithmetic number, because the mean of its divisors is an integer number (31691055).

Almost surely, 2^126741677 is an apocalyptic number.

It is an amenable number.

126741677 is a deficient number, since it is larger than the sum of its proper divisors (22543).

126741677 is a wasteful number, since it uses less digits than its factorization.

126741677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22542.

The product of its digits is 98784, while the sum is 41.

The square root of 126741677 is about 11257.9606057225. The cubic root of 126741677 is about 502.3115331610.

The spelling of 126741677 in words is "one hundred twenty-six million, seven hundred forty-one thousand, six hundred seventy-seven".