120045781 has 8 divisors (see below), whose sum is σ = 127785600. Its totient is φ = 112448160.

The previous prime is 120045773. The next prime is 120045787. The reversal of 120045781 is 187540021.

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

It is a cyclic number.

It is not a de Polignac number, because 120045781 - 2³ = 120045773 is a prime.

It is a super-2 number, since 2×120045781² = 28821979071799922, 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 (120045787) 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, 33805 + ... + 37186.

It is an arithmetic number, because the mean of its divisors is an integer number (15973200).

Almost surely, 2^120045781 is an apocalyptic number.

It is an amenable number.

120045781 is a deficient number, since it is larger than the sum of its proper divisors (7739819).

120045781 is an equidigital number, since it uses as much as digits as its factorization.

120045781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71099.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 120045781 is about 10956.5405580411. The cubic root of 120045781 is about 493.3051322549.

The spelling of 120045781 in words is "one hundred twenty million, forty-five thousand, seven hundred eighty-one".