120124405 has 4 divisors (see below), whose sum is σ = 144149292. Its totient is φ = 96099520.

The previous prime is 120124387. The next prime is 120124427. The reversal of 120124405 is 504421021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64144081 + 55980324 = 8009^2 + 7482^2 .

It is not a de Polignac number, because 120124405 - 2⁹ = 120123893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12012436 + ... + 12012445.

It is an arithmetic number, because the mean of its divisors is an integer number (36037323).

Almost surely, 2^120124405 is an apocalyptic number.

It is an amenable number.

120124405 is a deficient number, since it is larger than the sum of its proper divisors (24024887).

120124405 is an equidigital number, since it uses as much as digits as its factorization.

120124405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24024886.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 120124405 is about 10960.1279645814. The cubic root of 120124405 is about 493.4128055051.

Adding to 120124405 its reverse (504421021), we get a palindrome (624545426).

The spelling of 120124405 in words is "one hundred twenty million, one hundred twenty-four thousand, four hundred five".