133120105 has 4 divisors (see below), whose sum is σ = 159744132. Its totient is φ = 106496080.

The previous prime is 133120103. The next prime is 133120133. The reversal of 133120105 is 501021331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501021331 = 17 ⋅29471843.

It can be written as a sum of positive squares in 2 ways, for example, as 77721856 + 55398249 = 8816^2 + 7443^2 .

It is not a de Polignac number, because 133120105 - 2¹ = 133120103 is a prime.

It is a super-2 number, since 2×133120105² = 35441924710422050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133120103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13312006 + ... + 13312015.

It is an arithmetic number, because the mean of its divisors is an integer number (39936033).

Almost surely, 2^133120105 is an apocalyptic number.

It is an amenable number.

133120105 is a deficient number, since it is larger than the sum of its proper divisors (26624027).

133120105 is an equidigital number, since it uses as much as digits as its factorization.

133120105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26624026.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 133120105 is about 11537.7686317589. The cubic root of 133120105 is about 510.6004781561.

Adding to 133120105 its reverse (501021331), we get a palindrome (634141436).

It can be divided in two parts, 133120 and 105, that added together give a square (133225 = 365²).

The spelling of 133120105 in words is "one hundred thirty-three million, one hundred twenty thousand, one hundred five".