126648439129 has 9 divisors (see below), whose sum is σ = 127471171701. Its totient is φ = 125830989660.

The previous prime is 126648439087. The next prime is 126648439157. The reversal of 126648439129 is 921934846621.

The square root of 126648439129 is 355877.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 126648439129 - 2¹⁷ = 126648308057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126648439129.

It is not an unprimeable number, because it can be changed into a prime (126648439429) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 59430394 + ... + 59432524.

Almost surely, 2^126648439129 is an apocalyptic number.

126648439129 is the 355877-th square number.

126648439129 is the 177939-th centered octagonal number.

It is an amenable number.

126648439129 is a deficient number, since it is larger than the sum of its proper divisors (822732572).

126648439129 is an frugal number, since it uses more digits than its factorization.

126648439129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596 (or 2298 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 55.

The spelling of 126648439129 in words is "one hundred twenty-six billion, six hundred forty-eight million, four hundred thirty-nine thousand, one hundred twenty-nine".