1275641 has 4 divisors (see below), whose sum is σ = 1342800. Its totient is φ = 1208484.

The previous prime is 1275611. The next prime is 1275643. The reversal of 1275641 is 1465721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1465721 = 23 ⋅63727.

It is a cyclic number.

It is not a de Polignac number, because 1275641 - 2¹⁰ = 1274617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1275641.

It is not an unprimeable number, because it can be changed into a prime (1275643) 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, 33551 + ... + 33588.

It is an arithmetic number, because the mean of its divisors is an integer number (335700).

2^1275641 is an apocalyptic number.

It is an amenable number.

1275641 is a deficient number, since it is larger than the sum of its proper divisors (67159).

1275641 is an equidigital number, since it uses as much as digits as its factorization.

1275641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67158.

The product of its digits is 1680, while the sum is 26.

The square root of 1275641 is about 1129.4427829687. The cubic root of 1275641 is about 108.4533129639.

The spelling of 1275641 in words is "one million, two hundred seventy-five thousand, six hundred forty-one".