1214505 has 24 divisors (see below), whose sum is σ = 2131272. Its totient is φ = 639744.

The previous prime is 1214489. The next prime is 1214519. The reversal of 1214505 is 5054121.

It can be written as a sum of positive squares in 4 ways, for example, as 488601 + 725904 = 699^2 + 852^2 .

It is not a de Polignac number, because 1214505 - 2⁴ = 1214489 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6067 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (88803).

2^1214505 is an apocalyptic number.

1214505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1214505 is a deficient number, since it is larger than the sum of its proper divisors (916767).

1214505 is a wasteful number, since it uses less digits than its factorization.

1214505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1214505 is about 1102.0458248186. The cubic root of 1214505 is about 106.6923061195.

Adding to 1214505 its reverse (5054121), we get a palindrome (6268626).

The spelling of 1214505 in words is "one million, two hundred fourteen thousand, five hundred five".