1223047 has 4 divisors (see below), whose sum is σ = 1397776. Its totient is φ = 1048320.

The previous prime is 1223039. The next prime is 1223051. The reversal of 1223047 is 7403221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7403221 = 7 ⋅1057603.

It is not a de Polignac number, because 1223047 - 2³ = 1223039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223077) 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, 87354 + ... + 87367.

It is an arithmetic number, because the mean of its divisors is an integer number (349444).

2^1223047 is an apocalyptic number.

1223047 is the 639-th hex number.

1223047 is a deficient number, since it is larger than the sum of its proper divisors (174729).

1223047 is an equidigital number, since it uses as much as digits as its factorization.

1223047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174728.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 1223047 is about 1105.9145536614. The cubic root of 1223047 is about 106.9418556197.

Adding to 1223047 its reverse (7403221), we get a palindrome (8626268).

The spelling of 1223047 in words is "one million, two hundred twenty-three thousand, forty-seven".