1277213 has 8 divisors (see below), whose sum is σ = 1523328. Its totient is φ = 1047024.

The previous prime is 1277209. The next prime is 1277233. The reversal of 1277213 is 3127721.

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 1277213 - 2² = 1277209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806 + ... + 4127.

It is an arithmetic number, because the mean of its divisors is an integer number (190416).

2^1277213 is an apocalyptic number.

It is an amenable number.

1277213 is a deficient number, since it is larger than the sum of its proper divisors (246115).

1277213 is an equidigital number, since it uses as much as digits as its factorization.

1277213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963.

The product of its digits is 588, while the sum is 23.

The square root of 1277213 is about 1130.1384870891. The cubic root of 1277213 is about 108.4978444644.

The spelling of 1277213 in words is "one million, two hundred seventy-seven thousand, two hundred thirteen".