126440420239 has 32 divisors (see below), whose sum is σ = 151822540800. Its totient is φ = 103016309760.

The previous prime is 126440420237. The next prime is 126440420269. The reversal of 126440420239 is 932024044621.

It is not a de Polignac number, because 126440420239 - 2¹ = 126440420237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126440420198 and 126440420207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126440420237) 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 31 ways as a sum of consecutive naturals, for example, 3744172 + ... + 3777790.

It is an arithmetic number, because the mean of its divisors is an integer number (4744454400).

Almost surely, 2^126440420239 is an apocalyptic number.

126440420239 is a deficient number, since it is larger than the sum of its proper divisors (25382120561).

126440420239 is a wasteful number, since it uses less digits than its factorization.

126440420239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33943.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 126440420239 in words is "one hundred twenty-six billion, four hundred forty million, four hundred twenty thousand, two hundred thirty-nine".