120251505 has 32 divisors (see below), whose sum is σ = 210418560. Its totient is φ = 58158080.

The previous prime is 120251497. The next prime is 120251507. The reversal of 120251505 is 505152021.

It is not a de Polignac number, because 120251505 - 2³ = 120251497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120251507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97231 + ... + 98459.

It is an arithmetic number, because the mean of its divisors is an integer number (6575580).

Almost surely, 2^120251505 is an apocalyptic number.

120251505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120251505 is a deficient number, since it is larger than the sum of its proper divisors (90167055).

120251505 is a wasteful number, since it uses less digits than its factorization.

120251505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 120251505 is about 10965.9247216092. The cubic root of 120251505 is about 493.5867658879.

It can be divided in two parts, 12025 and 1505, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 120251505 in words is "one hundred twenty million, two hundred fifty-one thousand, five hundred five".