102742844 has 12 divisors (see below), whose sum is σ = 179987304. Its totient is φ = 51317904.

The previous prime is 102742837. The next prime is 102742847. The reversal of 102742844 is 448247201.

It is a self number, because there is not a number n which added to its sum of digits gives 102742844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102742847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8894 + ... + 16869.

It is an arithmetic number, because the mean of its divisors is an integer number (14998942).

Almost surely, 2^102742844 is an apocalyptic number.

It is an amenable number.

102742844 is a deficient number, since it is larger than the sum of its proper divisors (77244460).

102742844 is a wasteful number, since it uses less digits than its factorization.

102742844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26764 (or 26762 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 102742844 is about 10136.2144807615. The cubic root of 102742844 is about 468.3643824970.

The spelling of 102742844 in words is "one hundred two million, seven hundred forty-two thousand, eight hundred forty-four".