1245215 has 8 divisors (see below), whose sum is σ = 1500720. Its totient is φ = 991872.

The previous prime is 1245191. The next prime is 1245217. The reversal of 1245215 is 5125421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245215 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316 + ... + 2054.

It is an arithmetic number, because the mean of its divisors is an integer number (187590).

2^1245215 is an apocalyptic number.

1245215 is a deficient number, since it is larger than the sum of its proper divisors (255505).

1245215 is an equidigital number, since it uses as much as digits as its factorization.

1245215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its digits is 400, while the sum is 20.

The square root of 1245215 is about 1115.8920198657. The cubic root of 1245215 is about 107.5841058045.

The spelling of 1245215 in words is "one million, two hundred forty-five thousand, two hundred fifteen".