105784942 has 4 divisors (see below), whose sum is σ = 158677416. Its totient is φ = 52892470.

The previous prime is 105784933. The next prime is 105784949. The reversal of 105784942 is 249487501.

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

It is a super-2 number, since 2×105784942² = 22380907907886728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 105784895 and 105784904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105784949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26446234 + ... + 26446237.

It is an arithmetic number, because the mean of its divisors is an integer number (39669354).

Almost surely, 2^105784942 is an apocalyptic number.

105784942 is a deficient number, since it is larger than the sum of its proper divisors (52892474).

105784942 is an equidigital number, since it uses as much as digits as its factorization.

105784942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52892473.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 105784942 is about 10285.1806984613. The cubic root of 105784942 is about 472.9420731312.

The spelling of 105784942 in words is "one hundred five million, seven hundred eighty-four thousand, nine hundred forty-two".