857232041 has 4 divisors (see below), whose sum is σ = 858871632. Its totient is φ = 855592452.

The previous prime is 857232037. The next prime is 857232049. The reversal of 857232041 is 140232758.

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, and also an emirpimes, since its reverse is a distinct semiprime: 140232758 = 2 ⋅70116379.

It is a cyclic number.

It is not a de Polignac number, because 857232041 - 2² = 857232037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 857231989 and 857232007.

It is not an unprimeable number, because it can be changed into a prime (857232049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819011 + ... + 820056.

It is an arithmetic number, because the mean of its divisors is an integer number (214717908).

Almost surely, 2^857232041 is an apocalyptic number.

It is an amenable number.

857232041 is a deficient number, since it is larger than the sum of its proper divisors (1639591).

857232041 is a wasteful number, since it uses less digits than its factorization.

857232041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639590.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 857232041 is about 29278.5252531612. The cubic root of 857232041 is about 949.9471959570.

Adding to 857232041 its reverse (140232758), we get a palindrome (997464799).

The spelling of 857232041 in words is "eight hundred fifty-seven million, two hundred thirty-two thousand, forty-one".