120131505 has 40 divisors (see below), whose sum is σ = 231922152. Its totient is φ = 59139072.

The previous prime is 120131491. The next prime is 120131513. The reversal of 120131505 is 505131021.

It can be written as a sum of positive squares in 4 ways, for example, as 26873856 + 93257649 = 5184^2 + 9657^2 .

It is not a de Polignac number, because 120131505 - 2⁶ = 120131441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6144 + ... + 16673.

Almost surely, 2^120131505 is an apocalyptic number.

120131505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120131505 is a deficient number, since it is larger than the sum of its proper divisors (111790647).

120131505 is a wasteful number, since it uses less digits than its factorization.

120131505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22847 (or 22838 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 120131505 is about 10960.4518611232. The cubic root of 120131505 is about 493.4225264327.

Adding to 120131505 its reverse (505131021), we get a palindrome (625262526).

The spelling of 120131505 in words is "one hundred twenty million, one hundred thirty-one thousand, five hundred five".