120910861 has 8 divisors (see below), whose sum is σ = 124581240. Its totient is φ = 117292032.

The previous prime is 120910789. The next prime is 120910871. The reversal of 120910861 is 168019021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8444836 + 112466025 = 2906^2 + 10605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120910861 - 2¹¹ = 120908813 is a prime.

It is a super-2 number, since 2×120910861² = 29238872615522642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120910871) 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, 8100 + ... + 17533.

It is an arithmetic number, because the mean of its divisors is an integer number (15572655).

Almost surely, 2^120910861 is an apocalyptic number.

It is an amenable number.

120910861 is a deficient number, since it is larger than the sum of its proper divisors (3670379).

120910861 is an equidigital number, since it uses as much as digits as its factorization.

120910861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25775.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 120910861 is about 10995.9474807767. The cubic root of 120910861 is about 494.4872573831.

Adding to 120910861 its reverse (168019021), we get a palindrome (288929882).

It can be divided in two parts, 120910 and 861, that added together give a triangular number (121771 = T₄₉₃).

The spelling of 120910861 in words is "one hundred twenty million, nine hundred ten thousand, eight hundred sixty-one".