120405005 has 16 divisors (see below), whose sum is σ = 168499200. Its totient is φ = 82562256.

The previous prime is 120404983. The next prime is 120405011. The reversal of 120405005 is 500504021.

It is not a de Polignac number, because 120405005 - 2⁸ = 120404749 is a prime.

It is a congruent 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, 33389 + ... + 36818.

It is an arithmetic number, because the mean of its divisors is an integer number (10531200).

Almost surely, 2^120405005 is an apocalyptic number.

It is an amenable number.

120405005 is a deficient number, since it is larger than the sum of its proper divisors (48094195).

120405005 is an frugal number, since it uses more digits than its factorization.

120405005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70233 (or 70219 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 120405005 is about 10972.9214432620. The cubic root of 120405005 is about 493.7966963260.

Adding to 120405005 its reverse (500504021), we get a palindrome (620909026).

The spelling of 120405005 in words is "one hundred twenty million, four hundred five thousand, five".