9809085142 has 4 divisors (see below), whose sum is σ = 14713627716. Its totient is φ = 4904542570.

The previous prime is 9809085109. The next prime is 9809085173. The reversal of 9809085142 is 2415809089.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 9809085092 and 9809085101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2452271284 + ... + 2452271287.

It is an arithmetic number, because the mean of its divisors is an integer number (3678406929).

Almost surely, 2^9809085142 is an apocalyptic number.

9809085142 is a deficient number, since it is larger than the sum of its proper divisors (4904542574).

9809085142 is a wasteful number, since it uses less digits than its factorization.

9809085142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904542573.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 9809085142 is about 99040.8256326652. The cubic root of 9809085142 is about 2140.6360485982.

The spelling of 9809085142 in words is "nine billion, eight hundred nine million, eighty-five thousand, one hundred forty-two".