126981129039 has 8 divisors (see below), whose sum is σ = 169311018240. Its totient is φ = 84652662936.

The previous prime is 126981129017. The next prime is 126981129047. The reversal of 126981129039 is 930921189621.

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

It is not a de Polignac number, because 126981129039 - 2⁸ = 126981128783 is a prime.

It is a super-2 number, since 2×126981129039² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126981128982 and 126981129000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126981129139) 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, 126457 + ... + 519570.

It is an arithmetic number, because the mean of its divisors is an integer number (21163877280).

Almost surely, 2^126981129039 is an apocalyptic number.

126981129039 is a deficient number, since it is larger than the sum of its proper divisors (42329889201).

126981129039 is an equidigital number, since it uses as much as digits as its factorization.

126981129039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711549.

The product of its (nonzero) digits is 419904, while the sum is 51.

The spelling of 126981129039 in words is "one hundred twenty-six billion, nine hundred eighty-one million, one hundred twenty-nine thousand, thirty-nine".