105542043 has 4 divisors (see below), whose sum is σ = 140722728. Its totient is φ = 70361360.

The previous prime is 105542039. The next prime is 105542057. The reversal of 105542043 is 340245501.

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

It is a cyclic number.

It is not a de Polignac number, because 105542043 - 2² = 105542039 is a prime.

It is a super-2 number, since 2×105542043² = 22278245681227698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105542033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17590338 + ... + 17590343.

It is an arithmetic number, because the mean of its divisors is an integer number (35180682).

Almost surely, 2^105542043 is an apocalyptic number.

105542043 is a deficient number, since it is larger than the sum of its proper divisors (35180685).

105542043 is an equidigital number, since it uses as much as digits as its factorization.

105542043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35180684.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 105542043 is about 10273.3657094450. The cubic root of 105542043 is about 472.5798123905.

Adding to 105542043 its reverse (340245501), we get a palindrome (445787544).

The spelling of 105542043 in words is "one hundred five million, five hundred forty-two thousand, forty-three".