1205210 has 16 divisors (see below), whose sum is σ = 2184192. Its totient is φ = 478800.

The previous prime is 1205179. The next prime is 1205219. The reversal of 1205210 is 125021.

It is a super-2 number, since 2×1205210² = 2905062288200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1205191 and 1205200.

It is not an unprimeable number, because it can be changed into a prime (1205219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1595 + ... + 2225.

It is an arithmetic number, because the mean of its divisors is an integer number (136512).

2^1205210 is an apocalyptic number.

1205210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1205210 is a deficient number, since it is larger than the sum of its proper divisors (978982).

1205210 is a wasteful number, since it uses less digits than its factorization.

1205210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1205210 is about 1097.8205682169. The cubic root of 1205210 is about 106.4194251944.

The spelling of 1205210 in words is "one million, two hundred five thousand, two hundred ten".