1271601 has 12 divisors (see below), whose sum is σ = 1916928. Its totient is φ = 810744.

The previous prime is 1271597. The next prime is 1271603. The reversal of 1271601 is 1061721.

It is not a de Polignac number, because 1271601 - 2² = 1271597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1271603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2865 + ... + 3278.

It is an arithmetic number, because the mean of its divisors is an integer number (159744).

2^1271601 is an apocalyptic number.

It is an amenable number.

1271601 is a deficient number, since it is larger than the sum of its proper divisors (645327).

1271601 is a wasteful number, since it uses less digits than its factorization.

1271601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6172 (or 6169 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 1271601 is about 1127.6528721198. The cubic root of 1271601 is about 108.3387000629.

It can be divided in two parts, 127 and 1601, that added together give a cube (1728 = 12³).

The spelling of 1271601 in words is "one million, two hundred seventy-one thousand, six hundred one".