120720711 has 4 divisors (see below), whose sum is σ = 160960952. Its totient is φ = 80480472.

The previous prime is 120720703. The next prime is 120720713. The reversal of 120720711 is 117027021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120720711 - 2³ = 120720703 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 (120720713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20120116 + ... + 20120121.

It is an arithmetic number, because the mean of its divisors is an integer number (40240238).

Almost surely, 2^120720711 is an apocalyptic number.

120720711 is a deficient number, since it is larger than the sum of its proper divisors (40240241).

120720711 is an equidigital number, since it uses as much as digits as its factorization.

120720711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40240240.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 120720711 is about 10987.2977114484. The cubic root of 120720711 is about 494.2279035512.

Adding to 120720711 its reverse (117027021), we get a palindrome (237747732).

The spelling of 120720711 in words is "one hundred twenty million, seven hundred twenty thousand, seven hundred eleven".