133142705 has 8 divisors (see below), whose sum is σ = 160394472. Its totient is φ = 106098688.

The previous prime is 133142701. The next prime is 133142719. The reversal of 133142705 is 507241331.

It can be written as a sum of positive squares in 4 ways, for example, as 22619536 + 110523169 = 4756^2 + 10513^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133142705 - 2² = 133142701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133142701) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 50522 + ... + 53091.

It is an arithmetic number, because the mean of its divisors is an integer number (20049309).

Almost surely, 2^133142705 is an apocalyptic number.

It is an amenable number.

133142705 is a deficient number, since it is larger than the sum of its proper divisors (27251767).

133142705 is a wasteful number, since it uses less digits than its factorization.

133142705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103875.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 133142705 is about 11538.7479823419. The cubic root of 133142705 is about 510.6293716576.

The spelling of 133142705 in words is "one hundred thirty-three million, one hundred forty-two thousand, seven hundred five".