106205245 has 4 divisors (see below), whose sum is σ = 127446300. Its totient is φ = 84964192.

The previous prime is 106205243. The next prime is 106205321. The reversal of 106205245 is 542502601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542502601 = 137 ⋅3959873.

It can be written as a sum of positive squares in 2 ways, for example, as 21178404 + 85026841 = 4602^2 + 9221^2 .

It is a cyclic number.

It is not a de Polignac number, because 106205245 - 2¹ = 106205243 is a prime.

It is a super-2 number, since 2×106205245² = 22559108131020050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106205243) 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, 10620520 + ... + 10620529.

It is an arithmetic number, because the mean of its divisors is an integer number (31861575).

Almost surely, 2^106205245 is an apocalyptic number.

It is an amenable number.

106205245 is a deficient number, since it is larger than the sum of its proper divisors (21241055).

106205245 is an equidigital number, since it uses as much as digits as its factorization.

106205245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21241054.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 106205245 is about 10305.5928990039. The cubic root of 106205245 is about 473.5676073083.

Adding to 106205245 its reverse (542502601), we get a palindrome (648707846).

The spelling of 106205245 in words is "one hundred six million, two hundred five thousand, two hundred forty-five".