133142105 has 4 divisors (see below), whose sum is σ = 159770532. Its totient is φ = 106513680.

The previous prime is 133142081. The next prime is 133142143. The reversal of 133142105 is 501241331.

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 84254041 + 48888064 = 9179^2 + 6992^2 .

It is not a de Polignac number, because 133142105 - 2⁶ = 133142041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13314206 + ... + 13314215.

It is an arithmetic number, because the mean of its divisors is an integer number (39942633).

Almost surely, 2^133142105 is an apocalyptic number.

It is an amenable number.

133142105 is a deficient number, since it is larger than the sum of its proper divisors (26628427).

133142105 is an equidigital number, since it uses as much as digits as its factorization.

133142105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26628426.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 133142105 is about 11538.7219829581. The cubic root of 133142105 is about 510.6286046157.

Adding to 133142105 its reverse (501241331), we get a palindrome (634383436).

The spelling of 133142105 in words is "one hundred thirty-three million, one hundred forty-two thousand, one hundred five".