996542 has 4 divisors (see below), whose sum is σ = 1494816. Its totient is φ = 498270.

The previous prime is 996539. The next prime is 996551. The reversal of 996542 is 245699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245699 = 277 ⋅887.

It is an Ulam number.

It is a plaindrome in base 9.

It is a nialpdrome in base 10.

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, 249134 + ... + 249137.

It is an arithmetic number, because the mean of its divisors is an integer number (373704).

2⁹⁹⁶⁵⁴² is an apocalyptic number.

996542 is a deficient number, since it is larger than the sum of its proper divisors (498274).

996542 is a wasteful number, since it uses less digits than its factorization.

996542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498273.

The product of its digits is 19440, while the sum is 35.

The square root of 996542 is about 998.2695026895. The cubic root of 996542 is about 99.8846002135.

The spelling of 996542 in words is "nine hundred ninety-six thousand, five hundred forty-two".