1271361 has 16 divisors (see below), whose sum is σ = 2086784. Its totient is φ = 670464.

The previous prime is 1271359. The next prime is 1271383. The reversal of 1271361 is 1631721.

1271361 = T₈₅ + T₈₆ + ... + T₂₀₁.

It is not a de Polignac number, because 1271361 - 2¹ = 1271359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271321) 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, 2056 + ... + 2601.

It is an arithmetic number, because the mean of its divisors is an integer number (130424).

2^1271361 is an apocalyptic number.

It is an amenable number.

1271361 is a deficient number, since it is larger than the sum of its proper divisors (815423).

1271361 is a wasteful number, since it uses less digits than its factorization.

1271361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680.

The product of its digits is 252, while the sum is 21.

The square root of 1271361 is about 1127.5464513713. The cubic root of 1271361 is about 108.3318837413.

The spelling of 1271361 in words is "one million, two hundred seventy-one thousand, three hundred sixty-one".