840576133 has 4 divisors (see below), whose sum is σ = 840932140. Its totient is φ = 840220128.

The previous prime is 840576119. The next prime is 840576161. The reversal of 840576133 is 331675048.

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 227617569 + 612958564 = 15087^2 + 24758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840576133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840576092 and 840576101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840576173) 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, 174438 + ... + 179191.

It is an arithmetic number, because the mean of its divisors is an integer number (210233035).

Almost surely, 2^840576133 is an apocalyptic number.

It is an amenable number.

840576133 is a deficient number, since it is larger than the sum of its proper divisors (356007).

840576133 is a wasteful number, since it uses less digits than its factorization.

840576133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356006.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 840576133 is about 28992.6910272227. The cubic root of 840576133 is about 943.7544625726.

The spelling of 840576133 in words is "eight hundred forty million, five hundred seventy-six thousand, one hundred thirty-three".