105042361 has 4 divisors (see below), whose sum is σ = 106822800. Its totient is φ = 103261924.

The previous prime is 105042347. The next prime is 105042389. The reversal of 105042361 is 163240501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105042361 is a prime.

It is a super-2 number, since 2×105042361² = 22067795208908642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105045361) 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 in 3 ways as a sum of consecutive naturals, for example, 890131 + ... + 890248.

It is an arithmetic number, because the mean of its divisors is an integer number (26705700).

Almost surely, 2^105042361 is an apocalyptic number.

105042361 is the 4584-th centered decagonal number.

It is an amenable number.

105042361 is a deficient number, since it is larger than the sum of its proper divisors (1780439).

105042361 is an equidigital number, since it uses as much as digits as its factorization.

105042361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780438.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 105042361 is about 10249.0175626740. The cubic root of 105042361 is about 471.8328327509.

Adding to 105042361 its reverse (163240501), we get a palindrome (268282862).

The spelling of 105042361 in words is "one hundred five million, forty-two thousand, three hundred sixty-one".