120820707 has 16 divisors (see below), whose sum is σ = 204564480. Its totient is φ = 69040296.

The previous prime is 120820697. The next prime is 120820729. The reversal of 120820707 is 707028021.

It is not a de Polignac number, because 120820707 - 2⁶ = 120820643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (120820747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319443 + ... + 319820.

It is an arithmetic number, because the mean of its divisors is an integer number (12785280).

Almost surely, 2^120820707 is an apocalyptic number.

120820707 is a deficient number, since it is larger than the sum of its proper divisors (83743773).

120820707 is an equidigital number, since it uses as much as digits as its factorization.

120820707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639279 (or 639273 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 120820707 is about 10991.8472969742. The cubic root of 120820707 is about 494.3643263566.

Adding to 120820707 its reverse (707028021), we get a palindrome (827848728).

The spelling of 120820707 in words is "one hundred twenty million, eight hundred twenty thousand, seven hundred seven".