9857542 has 16 divisors (see below), whose sum is σ = 15678000. Its totient is φ = 4635360.

The previous prime is 9857537. The next prime is 9857579. The reversal of 9857542 is 2457589.

It is a super-2 number, since 2×9857542² = 194342268563528, which contains 22 as substring.

It is a d-powerful number, because it can be written as 9⁵ + 8² + 5² + 7 + 5¹⁰ + 4 + 2¹⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 9857495 and 9857504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4792 + ... + 6532.

It is an arithmetic number, because the mean of its divisors is an integer number (979875).

Almost surely, 2^9857542 is an apocalyptic number.

9857542 is a deficient number, since it is larger than the sum of its proper divisors (5820458).

9857542 is a wasteful number, since it uses less digits than its factorization.

9857542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911.

The product of its digits is 100800, while the sum is 40.

The square root of 9857542 is about 3139.6722758912. The cubic root of 9857542 is about 214.4155172505.

The spelling of 9857542 in words is "nine million, eight hundred fifty-seven thousand, five hundred forty-two".