126044140639 has 8 divisors (see below), whose sum is σ = 126565501680. Its totient is φ = 125523019776.

The previous prime is 126044140637. The next prime is 126044140693. The reversal of 126044140639 is 936041440621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126044140639 - 2¹ = 126044140637 is a prime.

It is a super-2 number, since 2×126044140639² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126044140631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032657 + ... + 1148245.

It is an arithmetic number, because the mean of its divisors is an integer number (15820687710).

Almost surely, 2^126044140639 is an apocalyptic number.

126044140639 is a deficient number, since it is larger than the sum of its proper divisors (521361041).

126044140639 is a wasteful number, since it uses less digits than its factorization.

126044140639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120089.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 126044140639 in words is "one hundred twenty-six billion, forty-four million, one hundred forty thousand, six hundred thirty-nine".