105493442 has 4 divisors (see below), whose sum is σ = 158240166. Its totient is φ = 52746720.

The previous prime is 105493429. The next prime is 105493447. The reversal of 105493442 is 244394501.

It is a Cunningham number, because it is equal to 10271²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 105493441 + 1 = 10271^2 + 1^2 .

It is a super-2 number, since 2×105493442² = 22257732610014728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105493399 and 105493408.

It is not an unprimeable number, because it can be changed into a prime (105493447) by changing a digit.

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, 26373359 + ... + 26373362.

Almost surely, 2^105493442 is an apocalyptic number.

105493442 is a deficient number, since it is larger than the sum of its proper divisors (52746724).

105493442 is an equidigital number, since it uses as much as digits as its factorization.

105493442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52746723.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 105493442 is about 10271.0000486808. Note that the first 4 decimals coincide. The cubic root of 105493442 is about 472.5072619098.

The spelling of 105493442 in words is "one hundred five million, four hundred ninety-three thousand, four hundred forty-two".