103942 has 4 divisors (see below), whose sum is σ = 155916. Its totient is φ = 51970.

The previous prime is 103919. The next prime is 103951. The reversal of 103942 is 249301.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

103942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25984 + ... + 25987.

It is an arithmetic number, because the mean of its divisors is an integer number (38979).

2¹⁰³⁹⁴² is an apocalyptic number.

103942 is a deficient number, since it is larger than the sum of its proper divisors (51974).

103942 is an equidigital number, since it uses as much as digits as its factorization.

103942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51973.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 103942 is about 322.4003722082. The cubic root of 103942 is about 47.0179499870.

It can be divided in two parts, 1039 and 42, that added together give a triangular number (1081 = T₄₆).

The spelling of 103942 in words is "one hundred three thousand, nine hundred forty-two".