120841605 has 32 divisors (see below), whose sum is σ = 216501120. Its totient is φ = 63947520.

The previous prime is 120841603. The next prime is 120841613. The reversal of 120841605 is 506148021.

120841605 is a `hidden beast` number, since 12 + 0 + 8 + 41 + 605 = 666.

It is not a de Polignac number, because 120841605 - 2¹ = 120841603 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120841601) 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, 14269 + ... + 21101.

It is an arithmetic number, because the mean of its divisors is an integer number (6765660).

Almost surely, 2^120841605 is an apocalyptic number.

120841605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120841605 is a deficient number, since it is larger than the sum of its proper divisors (95659515).

120841605 is a wasteful number, since it uses less digits than its factorization.

120841605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6978 (or 6972 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 120841605 is about 10992.7978695144. The cubic root of 120841605 is about 494.3928276248.

Adding to 120841605 its reverse (506148021), we get a palindrome (626989626).

It can be divided in two parts, 12084 and 1605, that added together give a square (13689 = 117²).

The spelling of 120841605 in words is "one hundred twenty million, eight hundred forty-one thousand, six hundred five".