120615 has 32 divisors (see below), whose sum is σ = 228096. Its totient is φ = 53760.

The previous prime is 120607. The next prime is 120619. The reversal of 120615 is 516021.

It is not a de Polignac number, because 120615 - 2³ = 120607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 120594 and 120603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2784 + ... + 2826.

It is an arithmetic number, because the mean of its divisors is an integer number (7128).

2¹²⁰⁶¹⁵ is an apocalyptic number.

120615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120615 is a deficient number, since it is larger than the sum of its proper divisors (107481).

120615 is a wasteful number, since it uses less digits than its factorization.

120615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 120615 is about 347.2967031228. The cubic root of 120615 is about 49.4083601929.

Adding to 120615 its reverse (516021), we get a palindrome (636636).

It can be divided in two parts, 1206 and 15, that added together give a palindrome (1221).

The spelling of 120615 in words is "one hundred twenty thousand, six hundred fifteen".