102785942 has 16 divisors (see below), whose sum is σ = 183866112. Its totient is φ = 42135720.

The previous prime is 102785909. The next prime is 102785951. The reversal of 102785942 is 249587201.

It is a junction number, because it is equal to n+sod(n) for n = 102785896 and 102785905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159284 + ... + 159927.

It is an arithmetic number, because the mean of its divisors is an integer number (11491632).

Almost surely, 2^102785942 is an apocalyptic number.

102785942 is a deficient number, since it is larger than the sum of its proper divisors (81080170).

102785942 is a wasteful number, since it uses less digits than its factorization.

102785942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319243.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 102785942 is about 10138.3401994607. The cubic root of 102785942 is about 468.4298623091.

The spelling of 102785942 in words is "one hundred two million, seven hundred eighty-five thousand, nine hundred forty-two".