1371215 has 4 divisors (see below), whose sum is σ = 1645464. Its totient is φ = 1096968.

The previous prime is 1371193. The next prime is 1371217. The reversal of 1371215 is 5121731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1371215 - 2⁶ = 1371151 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137117 + ... + 137126.

It is an arithmetic number, because the mean of its divisors is an integer number (411366).

2^1371215 is an apocalyptic number.

1371215 is a deficient number, since it is larger than the sum of its proper divisors (274249).

1371215 is an equidigital number, since it uses as much as digits as its factorization.

1371215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274248.

The product of its digits is 210, while the sum is 20.

The square root of 1371215 is about 1170.9888983248. The cubic root of 1371215 is about 111.0968772507.

Adding to 1371215 its reverse (5121731), we get a palindrome (6492946).

The spelling of 1371215 in words is "one million, three hundred seventy-one thousand, two hundred fifteen".