133004137 has 4 divisors (see below), whose sum is σ = 152004736. Its totient is φ = 114003540.

The previous prime is 133004129. The next prime is 133004171. The reversal of 133004137 is 731400331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 133004137 - 2³ = 133004129 is a prime.

It is a super-2 number, since 2×133004137² = 35380200918229538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133004197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9500289 + ... + 9500302.

It is an arithmetic number, because the mean of its divisors is an integer number (38001184).

Almost surely, 2^133004137 is an apocalyptic number.

It is an amenable number.

133004137 is a deficient number, since it is larger than the sum of its proper divisors (19000599).

133004137 is an equidigital number, since it uses as much as digits as its factorization.

133004137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19000598.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 133004137 is about 11532.7419549732. The cubic root of 133004137 is about 510.4521646734.

Adding to 133004137 its reverse (731400331), we get a palindrome (864404468).

The spelling of 133004137 in words is "one hundred thirty-three million, four thousand, one hundred thirty-seven".