126741861 has 32 divisors (see below), whose sum is σ = 195667200. Its totient is φ = 80982720.

The previous prime is 126741841. The next prime is 126741877. The reversal of 126741861 is 168147621.

It is a happy number.

It is not a de Polignac number, because 126741861 - 2¹⁰ = 126740837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126741841) 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 31 ways as a sum of consecutive naturals, for example, 122416 + ... + 123446.

It is an arithmetic number, because the mean of its divisors is an integer number (6114600).

Almost surely, 2^126741861 is an apocalyptic number.

It is an amenable number.

126741861 is a deficient number, since it is larger than the sum of its proper divisors (68925339).

126741861 is a wasteful number, since it uses less digits than its factorization.

126741861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1220 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 126741861 is about 11257.9687777147. The cubic root of 126741861 is about 502.3117762414.

It can be divided in two parts, 12674 and 1861, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 126741861 in words is "one hundred twenty-six million, seven hundred forty-one thousand, eight hundred sixty-one".