1275971 has 8 divisors (see below), whose sum is σ = 1378080. Its totient is φ = 1177792.

The previous prime is 1275947. The next prime is 1275973. The reversal of 1275971 is 1795721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1275971 - 2¹⁸ = 1013827 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (172260).

2^1275971 is an apocalyptic number.

1275971 is a deficient number, since it is larger than the sum of its proper divisors (102109).

1275971 is a wasteful number, since it uses less digits than its factorization.

1275971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965.

The product of its digits is 4410, while the sum is 32.

The square root of 1275971 is about 1129.5888632595. The cubic root of 1275971 is about 108.4626642122.

Adding to 1275971 its sum of digits (32), we get a triangular number (1276003 = T₁₅₉₇).

The spelling of 1275971 in words is "one million, two hundred seventy-five thousand, nine hundred seventy-one".