1371005 has 4 divisors (see below), whose sum is σ = 1645212. Its totient is φ = 1096800.

The previous prime is 1371001. The next prime is 1371017. The reversal of 1371005 is 5001731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 376996 + 994009 = 614^2 + 997^2 .

It is not a de Polignac number, because 1371005 - 2² = 1371001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371001) 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, 137096 + ... + 137105.

It is an arithmetic number, because the mean of its divisors is an integer number (411303).

2^1371005 is an apocalyptic number.

It is an amenable number.

1371005 is a deficient number, since it is larger than the sum of its proper divisors (274207).

1371005 is an equidigital number, since it uses as much as digits as its factorization.

1371005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274206.

The product of its (nonzero) digits is 105, while the sum is 17.

The square root of 1371005 is about 1170.8992270900. The cubic root of 1371005 is about 111.0912055082.

Adding to 1371005 its reverse (5001731), we get a palindrome (6372736).

The spelling of 1371005 in words is "one million, three hundred seventy-one thousand, five".