10642857 has 4 divisors (see below), whose sum is σ = 14190480. Its totient is φ = 7095236.

The previous prime is 10642843. The next prime is 10642861. The reversal of 10642857 is 75824601.

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: 75824601 = 3 ⋅25274867.

It is a cyclic number.

It is not a de Polignac number, because 10642857 - 2¹⁰ = 10641833 is a prime.

It is a super-2 number, since 2×10642857² = 226540810244898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10642757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1773807 + ... + 1773812.

It is an arithmetic number, because the mean of its divisors is an integer number (3547620).

Almost surely, 2^10642857 is an apocalyptic number.

It is an amenable number.

10642857 is a deficient number, since it is larger than the sum of its proper divisors (3547623).

10642857 is an equidigital number, since it uses as much as digits as its factorization.

10642857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547622.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 10642857 is about 3262.3391914392. The cubic root of 10642857 is about 219.9645741856.

The spelling of 10642857 in words is "ten million, six hundred forty-two thousand, eight hundred fifty-seven".