9805142 has 4 divisors (see below), whose sum is σ = 14707716. Its totient is φ = 4902570.

The previous prime is 9805099. The next prime is 9805157. The reversal of 9805142 is 2415089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2415089 = 1319 ⋅1831.

It is a super-2 number, since 2×9805142² = 192281619280328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2451284 + ... + 2451287.

It is an arithmetic number, because the mean of its divisors is an integer number (3676929).

Almost surely, 2^9805142 is an apocalyptic number.

9805142 is a deficient number, since it is larger than the sum of its proper divisors (4902574).

9805142 is a wasteful number, since it uses less digits than its factorization.

9805142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4902573.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 9805142 is about 3131.3163366227. The cubic root of 9805142 is about 214.0349172942.

The spelling of 9805142 in words is "nine million, eight hundred five thousand, one hundred forty-two".