120835981 has 4 divisors (see below), whose sum is σ = 138098272. Its totient is φ = 103573692.

The previous prime is 120835973. The next prime is 120835993. The reversal of 120835981 is 189538021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 189538021 = 467 ⋅405863.

It is a cyclic number.

It is not a de Polignac number, because 120835981 - 2³ = 120835973 is a prime.

It is a super-2 number, since 2×120835981² = 29202668608464722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120835981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120835921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8631135 + ... + 8631148.

It is an arithmetic number, because the mean of its divisors is an integer number (34524568).

Almost surely, 2^120835981 is an apocalyptic number.

It is an amenable number.

120835981 is a deficient number, since it is larger than the sum of its proper divisors (17262291).

120835981 is an equidigital number, since it uses as much as digits as its factorization.

120835981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17262290.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 120835981 is about 10992.5420626896. The cubic root of 120835981 is about 494.3851577818.

The spelling of 120835981 in words is "one hundred twenty million, eight hundred thirty-five thousand, nine hundred eighty-one".