1257223 has 8 divisors (see below), whose sum is σ = 1409040. Its totient is φ = 1111680.

The previous prime is 1257209. The next prime is 1257229. The reversal of 1257223 is 3227521.

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 1257223 - 2⁹ = 1256711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1257194 and 1257203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257229) 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 7 ways as a sum of consecutive naturals, for example, 1138 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (176130).

2^1257223 is an apocalyptic number.

1257223 is a deficient number, since it is larger than the sum of its proper divisors (151817).

1257223 is a wasteful number, since it uses less digits than its factorization.

1257223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137.

The product of its digits is 840, while the sum is 22.

The square root of 1257223 is about 1121.2595596025. The cubic root of 1257223 is about 107.9288225567.

The spelling of 1257223 in words is "one million, two hundred fifty-seven thousand, two hundred twenty-three".