7138133 has 4 divisors (see below), whose sum is σ = 7211820. Its totient is φ = 7064448.

The previous prime is 7138123. The next prime is 7138169. The reversal of 7138133 is 3318317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3318317 = 859 ⋅3863.

It can be written as a sum of positive squares in 2 ways, for example, as 4635409 + 2502724 = 2153^2 + 1582^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138133 - 2⁶ = 7138069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138123) 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, 36698 + ... + 36891.

It is an arithmetic number, because the mean of its divisors is an integer number (1802955).

Almost surely, 2^7138133 is an apocalyptic number.

It is an amenable number.

7138133 is a deficient number, since it is larger than the sum of its proper divisors (73687).

7138133 is an equidigital number, since it uses as much as digits as its factorization.

7138133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73686.

The product of its digits is 1512, while the sum is 26.

The square root of 7138133 is about 2671.7284667421. The cubic root of 7138133 is about 192.5432117531.

The spelling of 7138133 in words is "seven million, one hundred thirty-eight thousand, one hundred thirty-three".