1204215 has 16 divisors (see below), whose sum is σ = 1972608. Its totient is φ = 626976.

The previous prime is 1204207. The next prime is 1204219. The reversal of 1204215 is 5124021.

It is not a de Polignac number, because 1204215 - 2³ = 1204207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1204194 and 1204203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (123288).

2^1204215 is an apocalyptic number.

1204215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1204215 is a deficient number, since it is larger than the sum of its proper divisors (768393).

1204215 is a wasteful number, since it uses less digits than its factorization.

1204215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1204215 is about 1097.3673040509. The cubic root of 1204215 is about 106.3901311347.

Adding to 1204215 its reverse (5124021), we get a palindrome (6328236).

The spelling of 1204215 in words is "one million, two hundred four thousand, two hundred fifteen".