126291400039 has 12 divisors (see below), whose sum is σ = 148680413784. Its totient is φ = 106945553904.

The previous prime is 126291400033. The next prime is 126291400099. The reversal of 126291400039 is 930004192621.

It is not a de Polignac number, because 126291400039 - 2³ = 126291400031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126291399980 and 126291400007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126291400031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15522292 + ... + 15530425.

It is an arithmetic number, because the mean of its divisors is an integer number (12390034482).

Almost surely, 2^126291400039 is an apocalyptic number.

126291400039 is a deficient number, since it is larger than the sum of its proper divisors (22389013745).

126291400039 is an equidigital number, since it uses as much as digits as its factorization.

126291400039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31052814 (or 31052807 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 126291400039 in words is "one hundred twenty-six billion, two hundred ninety-one million, four hundred thousand, thirty-nine".