120554145 has 72 divisors (see below), whose sum is σ = 227164392. Its totient is φ = 59097600.

The previous prime is 120554129. The next prime is 120554153. The reversal of 120554145 is 541455021.

It can be written as a sum of positive squares in 4 ways, for example, as 10556001 + 109998144 = 3249^2 + 10488^2 .

It is not a de Polignac number, because 120554145 - 2⁴ = 120554129 is a prime.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 665955 + ... + 666135.

It is an arithmetic number, because the mean of its divisors is an integer number (3155061).

Almost surely, 2^120554145 is an apocalyptic number.

120554145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120554145 is a deficient number, since it is larger than the sum of its proper divisors (106610247).

120554145 is a wasteful number, since it uses less digits than its factorization.

120554145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 120554145 is about 10979.7151602398. The cubic root of 120554145 is about 494.0004930962. Note that the first 3 decimals are identical.

The spelling of 120554145 in words is "one hundred twenty million, five hundred fifty-four thousand, one hundred forty-five".