120266505 has 16 divisors (see below), whose sum is σ = 213807360. Its totient is φ = 64142064.

The previous prime is 120266459. The next prime is 120266513. The reversal of 120266505 is 505662021.

120266505 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 6 + 650 + 5 = 666.

It is not a de Polignac number, because 120266505 - 2¹² = 120262409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 445297 + ... + 445566.

It is an arithmetic number, because the mean of its divisors is an integer number (13362960).

Almost surely, 2^120266505 is an apocalyptic number.

120266505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120266505 is a deficient number, since it is larger than the sum of its proper divisors (93540855).

120266505 is an equidigital number, since it uses as much as digits as its factorization.

120266505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890877 (or 890871 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 120266505 is about 10966.6086371312. The cubic root of 120266505 is about 493.6072881360.

The spelling of 120266505 in words is "one hundred twenty million, two hundred sixty-six thousand, five hundred five".