1243214430 has 64 divisors (see below), whose sum is σ = 3088834560. Its totient is φ = 319987584.

The previous prime is 1243214417. The next prime is 1243214443. The reversal of 1243214430 is 344123421.

It is an interprime number because it is at equal distance from previous prime (1243214417) and next prime (1243214443).

It is a self number, because there is not a number n which added to its sum of digits gives 1243214430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136561 + ... + 145379.

It is an arithmetic number, because the mean of its divisors is an integer number (48263040).

Almost surely, 2^1243214430 is an apocalyptic number.

1243214430 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 1243214430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544417280).

1243214430 is an abundant number, since it is smaller than the sum of its proper divisors (1845620130).

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

1243214430 is a wasteful number, since it uses less digits than its factorization.

1243214430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8993.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1243214430 is about 35259.2460214339. The cubic root of 1243214430 is about 1075.2645982886.

Adding to 1243214430 its reverse (344123421), we get a palindrome (1587337851).

It can be divided in two parts, 12432 and 14430, that added together give a palindrome (26862).

The spelling of 1243214430 in words is "one billion, two hundred forty-three million, two hundred fourteen thousand, four hundred thirty".