1243472 has 40 divisors (see below), whose sum is σ = 2618880. Its totient is φ = 570240.

The previous prime is 1243471. The next prime is 1243477. The reversal of 1243472 is 2743421.

It is a super-2 number, since 2×1243472² = 3092445229568, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11354 + ... + 11462.

It is an arithmetic number, because the mean of its divisors is an integer number (65472).

2^1243472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309440).

1243472 is an abundant number, since it is smaller than the sum of its proper divisors (1375408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243472 is a wasteful number, since it uses less digits than its factorization.

1243472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 165 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 1243472 is about 1115.1107568309. The cubic root of 1243472 is about 107.5338851175.

Adding to 1243472 its reverse (2743421), we get a palindrome (3986893).

The spelling of 1243472 in words is "one million, two hundred forty-three thousand, four hundred seventy-two".