126765043 has 4 divisors (see below), whose sum is σ = 126929808. Its totient is φ = 126600280.

The previous prime is 126765007. The next prime is 126765049. The reversal of 126765043 is 340567621.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126765043 is a prime.

It is a super-2 number, since 2×126765043² = 32138752253583698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126765049) 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, 81223 + ... + 82768.

It is an arithmetic number, because the mean of its divisors is an integer number (31732452).

Almost surely, 2^126765043 is an apocalyptic number.

126765043 is a deficient number, since it is larger than the sum of its proper divisors (164765).

126765043 is an equidigital number, since it uses as much as digits as its factorization.

126765043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164764.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 126765043 is about 11258.9983124610. The cubic root of 126765043 is about 502.3423998560.

The spelling of 126765043 in words is "one hundred twenty-six million, seven hundred sixty-five thousand, forty-three".