133612417 has 8 divisors (see below), whose sum is σ = 136342440. Its totient is φ = 130890240.

The previous prime is 133612397. The next prime is 133612429. The reversal of 133612417 is 714216331.

It can be written as a sum of positive squares in 4 ways, for example, as 77422401 + 56190016 = 8799^2 + 7496^2 .

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 133612417 - 2²³ = 125223809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133612447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42417 + ... + 45457.

It is an arithmetic number, because the mean of its divisors is an integer number (17042805).

Almost surely, 2^133612417 is an apocalyptic number.

It is an amenable number.

133612417 is a deficient number, since it is larger than the sum of its proper divisors (2730023).

133612417 is an equidigital number, since it uses as much as digits as its factorization.

133612417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923.

The product of its digits is 3024, while the sum is 28.

The square root of 133612417 is about 11559.0837439652. The cubic root of 133612417 is about 511.2291472695.

Adding to 133612417 its reverse (714216331), we get a palindrome (847828748).

The spelling of 133612417 in words is "one hundred thirty-three million, six hundred twelve thousand, four hundred seventeen".