1243103424 has 112 divisors (see below), whose sum is σ = 3486912000. Its totient is φ = 389753856.

The previous prime is 1243103419. The next prime is 1243103431. The reversal of 1243103424 is 4243013421.

It is a super-2 number, since 2×1243103424² = 3090612245521047552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1243103394 and 1243103403.

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, 542409 + ... + 544695.

Almost surely, 2^1243103424 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 1243103424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743456000).

1243103424 is an abundant number, since it is smaller than the sum of its proper divisors (2243808576).

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

1243103424 is a wasteful number, since it uses less digits than its factorization.

1243103424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2460 counting only the distinct ones).

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

The square root of 1243103424 is about 35257.6718459969. The cubic root of 1243103424 is about 1075.2325940551.

Adding to 1243103424 its reverse (4243013421), we get a palindrome (5486116845).

The spelling of 1243103424 in words is "one billion, two hundred forty-three million, one hundred three thousand, four hundred twenty-four".