840552341 has 4 divisors (see below), whose sum is σ = 840799500. Its totient is φ = 840305184.

The previous prime is 840552289. The next prime is 840552353. The reversal of 840552341 is 143255048.

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 126112900 + 714439441 = 11230^2 + 26729^2 .

It is a cyclic number.

It is not a de Polignac number, because 840552341 - 2¹⁸ = 840290197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840552298 and 840552307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840555341) 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, 118406 + ... + 125303.

It is an arithmetic number, because the mean of its divisors is an integer number (210199875).

Almost surely, 2^840552341 is an apocalyptic number.

It is an amenable number.

840552341 is a deficient number, since it is larger than the sum of its proper divisors (247159).

840552341 is a wasteful number, since it uses less digits than its factorization.

840552341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247158.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 840552341 is about 28992.2807140108. The cubic root of 840552341 is about 943.7455583552.

It can be divided in two parts, 8405523 and 41, that multiplied together give a palindrome (344626443).

The spelling of 840552341 in words is "eight hundred forty million, five hundred fifty-two thousand, three hundred forty-one".