120016505 has 16 divisors (see below), whose sum is σ = 165193344. Its totient is φ = 81997440.

The previous prime is 120016499. The next prime is 120016511. The reversal of 120016505 is 505610021.

It is an interprime number because it is at equal distance from previous prime (120016499) and next prime (120016511).

It is not a de Polignac number, because 120016505 - 2⁶ = 120016441 is a prime.

It is a super-2 number, since 2×120016505² = 28807922944830050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3734 + ... + 15936.

It is an arithmetic number, because the mean of its divisors is an integer number (10324584).

Almost surely, 2^120016505 is an apocalyptic number.

It is an amenable number.

120016505 is a deficient number, since it is larger than the sum of its proper divisors (45176839).

120016505 is a wasteful number, since it uses less digits than its factorization.

120016505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12496.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 120016505 is about 10955.2044709353. The cubic root of 120016505 is about 493.2650276240.

Adding to 120016505 its reverse (505610021), we get a palindrome (625626526).

The spelling of 120016505 in words is "one hundred twenty million, sixteen thousand, five hundred five".