126720512072 has 32 divisors (see below), whose sum is σ = 296229769920. Its totient is φ = 49371627840.

The previous prime is 126720512069. The next prime is 126720512081. The reversal of 126720512072 is 270215027621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102856943 + ... + 102858174.

It is an arithmetic number, because the mean of its divisors is an integer number (9257180310).

Almost surely, 2^126720512072 is an apocalyptic number.

It is an amenable number.

126720512072 is an abundant number, since it is smaller than the sum of its proper divisors (169509257848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126720512072 is a wasteful number, since it uses less digits than its factorization.

126720512072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205715141 (or 205715137 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 126720512072 its reverse (270215027621), we get a palindrome (396935539693).

The spelling of 126720512072 in words is "one hundred twenty-six billion, seven hundred twenty million, five hundred twelve thousand, seventy-two".