1247213 has 4 divisors (see below), whose sum is σ = 1360608. Its totient is φ = 1133820.

The previous prime is 1247209. The next prime is 1247231. The reversal of 1247213 is 3127421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3127421 = 11 ⋅284311.

It is a cyclic number.

It is not a de Polignac number, because 1247213 - 2² = 1247209 is a prime.

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 (1247243) 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, 56681 + ... + 56702.

It is an arithmetic number, because the mean of its divisors is an integer number (340152).

2^1247213 is an apocalyptic number.

It is an amenable number.

1247213 is a deficient number, since it is larger than the sum of its proper divisors (113395).

1247213 is a wasteful number, since it uses less digits than its factorization.

1247213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113394.

The product of its digits is 336, while the sum is 20.

The square root of 1247213 is about 1116.7869089491. The cubic root of 1247213 is about 107.6416161350.

It can be divided in two parts, 124 and 7213, that added together give a palindrome (7337).

The spelling of 1247213 in words is "one million, two hundred forty-seven thousand, two hundred thirteen".