126720512071 has 8 divisors (see below), whose sum is σ = 126985474224. Its totient is φ = 126455634240.

The previous prime is 126720512069. The next prime is 126720512081. The reversal of 126720512071 is 170215027621.

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 126720512071 - 2¹ = 126720512069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126720512081) 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, 3643761 + ... + 3678373.

It is an arithmetic number, because the mean of its divisors is an integer number (15873184278).

Almost surely, 2^126720512071 is an apocalyptic number.

126720512071 is a deficient number, since it is larger than the sum of its proper divisors (264962153).

126720512071 is an equidigital number, since it uses as much as digits as its factorization.

126720512071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42161.

The product of its (nonzero) digits is 11760, while the sum is 34.

Adding to 126720512071 its reverse (170215027621), we get a palindrome (296935539692).

The spelling of 126720512071 in words is "one hundred twenty-six billion, seven hundred twenty million, five hundred twelve thousand, seventy-one".