105542506 has 4 divisors (see below), whose sum is σ = 158313762. Its totient is φ = 52771252.

The previous prime is 105542483. The next prime is 105542509. The reversal of 105542506 is 605245501.

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., 82646281 + 22896225 = 9091^2 + 4785^2 .

It is a super-2 number, since 2×105542506² = 22278441145520072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105542509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26385625 + ... + 26385628.

Almost surely, 2^105542506 is an apocalyptic number.

105542506 is a deficient number, since it is larger than the sum of its proper divisors (52771256).

105542506 is an equidigital number, since it uses as much as digits as its factorization.

105542506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52771255.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 105542506 is about 10273.3882434180. The cubic root of 105542506 is about 472.5805034393.

The spelling of 105542506 in words is "one hundred five million, five hundred forty-two thousand, five hundred six".