857242953 has 32 divisors (see below), whose sum is σ = 1459077120. Its totient is φ = 487267920.

The previous prime is 857242949. The next prime is 857242979. The reversal of 857242953 is 359242758.

857242953 is a `hidden beast` number, since 8 + 572 + 4 + 29 + 53 = 666.

857242953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 857242953 - 2² = 857242949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 857242899 and 857242908.

It is not an unprimeable number, because it can be changed into a prime (857242753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24226 + ... + 47972.

It is an arithmetic number, because the mean of its divisors is an integer number (45596160).

Almost surely, 2^857242953 is an apocalyptic number.

It is an amenable number.

857242953 is a deficient number, since it is larger than the sum of its proper divisors (601834167).

857242953 is a wasteful number, since it uses less digits than its factorization.

857242953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23954 (or 23948 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 857242953 is about 29278.7116007518. The cubic root of 857242953 is about 949.9512266742.

The spelling of 857242953 in words is "eight hundred fifty-seven million, two hundred forty-two thousand, nine hundred fifty-three".