1215005 has 8 divisors (see below), whose sum is σ = 1590624. Its totient is φ = 883600.

The previous prime is 1214981. The next prime is 1215017. The reversal of 1215005 is 5005121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1215005 - 2⁸ = 1214749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 10991 + ... + 11100.

It is an arithmetic number, because the mean of its divisors is an integer number (198828).

2^1215005 is an apocalyptic number.

It is an amenable number.

1215005 is a deficient number, since it is larger than the sum of its proper divisors (375619).

1215005 is a wasteful number, since it uses less digits than its factorization.

1215005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22107.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 1215005 is about 1102.2726522962. The cubic root of 1215005 is about 106.7069455087.

The spelling of 1215005 in words is "one million, two hundred fifteen thousand, five".