1243230620 has 36 divisors (see below), whose sum is σ = 2672991720. Its totient is φ = 485712864.

The previous prime is 1243230617. The next prime is 1243230623. The reversal of 1243230620 is 260323421.

It is an interprime number because it is at equal distance from previous prime (1243230617) and next prime (1243230623).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243230623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20171 + ... + 53789.

It is an arithmetic number, because the mean of its divisors is an integer number (74249770).

Almost surely, 2^1243230620 is an apocalyptic number.

1243230620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243230620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336495860).

1243230620 is an abundant number, since it is smaller than the sum of its proper divisors (1429761100).

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

1243230620 is a wasteful number, since it uses less digits than its factorization.

1243230620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33714 (or 33669 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1243230620 is about 35259.4756058566. The cubic root of 1243230620 is about 1075.2692658820.

The spelling of 1243230620 in words is "one billion, two hundred forty-three million, two hundred thirty thousand, six hundred twenty".