120945 has 16 divisors (see below), whose sum is σ = 211392. Its totient is φ = 58560.

The previous prime is 120943. The next prime is 120947. The reversal of 120945 is 549021.

It is an interprime number because it is at equal distance from previous prime (120943) and next prime (120947).

It is not a de Polignac number, because 120945 - 2¹ = 120943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120941) 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, 202 + ... + 531.

It is an arithmetic number, because the mean of its divisors is an integer number (13212).

2¹²⁰⁹⁴⁵ is an apocalyptic number.

120945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120945 is a deficient number, since it is larger than the sum of its proper divisors (90447).

120945 is a wasteful number, since it uses less digits than its factorization.

120945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 120945 is about 347.7714766912. The cubic root of 120945 is about 49.4533792249.

Adding to 120945 its reverse (549021), we get a palindrome (669966).

The spelling of 120945 in words is "one hundred twenty thousand, nine hundred forty-five".