105321290 has 16 divisors (see below), whose sum is σ = 200730312. Its totient is φ = 39650304.

The previous prime is 105321287. The next prime is 105321367. The reversal of 105321290 is 92123501.

It can be written as a sum of positive squares in 4 ways, for example, as 96963409 + 8357881 = 9847^2 + 2891^2 .

It is a super-2 number, since 2×105321290² = 22185148254528200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309599 + ... + 309938.

Almost surely, 2^105321290 is an apocalyptic number.

105321290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105321290 is a deficient number, since it is larger than the sum of its proper divisors (95409022).

105321290 is a wasteful number, since it uses less digits than its factorization.

105321290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619561.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 105321290 is about 10262.6161381979. The cubic root of 105321290 is about 472.2500978751.

Adding to 105321290 its reverse (92123501), we get a palindrome (197444791).

The spelling of 105321290 in words is "one hundred five million, three hundred twenty-one thousand, two hundred ninety".