1243230 has 32 divisors (see below), whose sum is σ = 3088800. Its totient is φ = 319872.

The previous prime is 1243211. The next prime is 1243271. The reversal of 1243230 is 323421.

1243230 = 556² + 557² + ... + 559².

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (96525).

2^1243230 is an apocalyptic number.

1243230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544400).

1243230 is an abundant number, since it is smaller than the sum of its proper divisors (1845570).

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

1243230 is a wasteful number, since it uses less digits than its factorization.

1243230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1243230 is about 1115.0022421502. The cubic root of 1243230 is about 107.5269087136.

Adding to 1243230 its reverse (323421), we get a palindrome (1566651).

The spelling of 1243230 in words is "one million, two hundred forty-three thousand, two hundred thirty".