120020015 has 8 divisors (see below), whose sum is σ = 144127728. Its totient is φ = 95946880.

The previous prime is 120020011. The next prime is 120020027. The reversal of 120020015 is 510020021.

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

It is not a de Polignac number, because 120020015 - 2² = 120020011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120019978 and 120020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120020011) 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, 266 + ... + 15495.

It is an arithmetic number, because the mean of its divisors is an integer number (18015966).

Almost surely, 2^120020015 is an apocalyptic number.

120020015 is a deficient number, since it is larger than the sum of its proper divisors (24107713).

120020015 is a wasteful number, since it uses less digits than its factorization.

120020015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17289.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 120020015 is about 10955.3646675955. The cubic root of 120020015 is about 493.2698362497.

Adding to 120020015 its reverse (510020021), we get a palindrome (630040036).

It can be divided in two parts, 1200200 and 15, that multiplied together give a triangular number (18003000 = T₆₀₀₀).

The spelling of 120020015 in words is "one hundred twenty million, twenty thousand, fifteen".