105122090 has 8 divisors (see below), whose sum is σ = 189219780. Its totient is φ = 42048832.

The previous prime is 105122089. The next prime is 105122119. The reversal of 105122090 is 90221501.

It can be written as a sum of positive squares in 2 ways, for example, as 105042001 + 80089 = 10249^2 + 283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105122090² = 22101307611936200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5256095 + ... + 5256114.

Almost surely, 2^105122090 is an apocalyptic number.

105122090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105122090 is a deficient number, since it is larger than the sum of its proper divisors (84097690).

105122090 is a wasteful number, since it uses less digits than its factorization.

105122090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10512216.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 105122090 is about 10252.9064172068. The cubic root of 105122090 is about 471.9521790343.

Adding to 105122090 its reverse (90221501), we get a palindrome (195343591).

The spelling of 105122090 in words is "one hundred five million, one hundred twenty-two thousand, ninety".