9842157 has 12 divisors (see below), whose sum is σ = 15310204. Its totient is φ = 6056640.

The previous prime is 9842123. The next prime is 9842179. The reversal of 9842157 is 7512489.

It can be written as a sum of positive squares in 2 ways, for example, as 715716 + 9126441 = 846^2 + 3021^2 .

It is not a de Polignac number, because 9842157 - 2¹⁰ = 9841133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9842117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41944 + ... + 42177.

Almost surely, 2^9842157 is an apocalyptic number.

It is an amenable number.

9842157 is a deficient number, since it is larger than the sum of its proper divisors (5468047).

9842157 is a wasteful number, since it uses less digits than its factorization.

9842157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84140 (or 84137 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 9842157 is about 3137.2212226746. The cubic root of 9842157 is about 214.3039106453.

It can be divided in two parts, 9842 and 157, that added together give a palindrome (9999).

The spelling of 9842157 in words is "nine million, eight hundred forty-two thousand, one hundred fifty-seven".