120706405 has 12 divisors (see below), whose sum is σ = 149676876. Its totient is φ = 93446400.

The previous prime is 120706403. The next prime is 120706423. The reversal of 120706405 is 504607021.

It can be written as a sum of positive squares in 2 ways, for example, as 49084036 + 71622369 = 7006^2 + 8463^2 .

It is not a de Polignac number, because 120706405 - 2¹ = 120706403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120706405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120706403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7756 + ... + 17365.

It is an arithmetic number, because the mean of its divisors is an integer number (12473073).

Almost surely, 2^120706405 is an apocalyptic number.

It is an amenable number.

120706405 is a deficient number, since it is larger than the sum of its proper divisors (28970471).

120706405 is an equidigital number, since it uses as much as digits as its factorization.

120706405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25188 (or 25157 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 120706405 is about 10986.6466676598. The cubic root of 120706405 is about 494.2083799648.

The spelling of 120706405 in words is "one hundred twenty million, seven hundred six thousand, four hundred five".