126682961 has 4 divisors (see below), whose sum is σ = 127845300. Its totient is φ = 125520624.

The previous prime is 126682943. The next prime is 126682981. The reversal of 126682961 is 169286621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80442961 + 46240000 = 8969^2 + 6800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126682961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126682921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581006 + ... + 581223.

It is an arithmetic number, because the mean of its divisors is an integer number (31961325).

Almost surely, 2^126682961 is an apocalyptic number.

It is an amenable number.

126682961 is a deficient number, since it is larger than the sum of its proper divisors (1162339).

126682961 is a wasteful number, since it uses less digits than its factorization.

126682961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162338.

The product of its digits is 62208, while the sum is 41.

The square root of 126682961 is about 11255.3525488987. The cubic root of 126682961 is about 502.2339520516.

The spelling of 126682961 in words is "one hundred twenty-six million, six hundred eighty-two thousand, nine hundred sixty-one".