1271973 has 4 divisors (see below), whose sum is σ = 1695968. Its totient is φ = 847980.

The previous prime is 1271971. The next prime is 1271987. The reversal of 1271973 is 3791721.

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.

It is not a de Polignac number, because 1271973 - 2¹ = 1271971 is a prime.

It is a D-number.

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 1271973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271971) 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, 211993 + ... + 211998.

It is an arithmetic number, because the mean of its divisors is an integer number (423992).

2^1271973 is an apocalyptic number.

It is an amenable number.

1271973 is a deficient number, since it is larger than the sum of its proper divisors (423995).

1271973 is an equidigital number, since it uses as much as digits as its factorization.

1271973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423994.

The product of its digits is 2646, while the sum is 30.

The square root of 1271973 is about 1127.8178044347. The cubic root of 1271973 is about 108.3492636665.

The spelling of 1271973 in words is "one million, two hundred seventy-one thousand, nine hundred seventy-three".