1243023056 has 40 divisors (see below), whose sum is σ = 2717906400. Its totient is φ = 545525120.

The previous prime is 1243023031. The next prime is 1243023083. The reversal of 1243023056 is 6503203421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116666 + ... + 126873.

It is an arithmetic number, because the mean of its divisors is an integer number (67947660).

Almost surely, 2^1243023056 is an apocalyptic number.

1243023056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1243023056 is an abundant number, since it is smaller than the sum of its proper divisors (1474883344).

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

1243023056 is a wasteful number, since it uses less digits than its factorization.

1243023056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243587 (or 243581 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1243023056 is about 35256.5321039946. The cubic root of 1243023056 is about 1075.2094219002.

Adding to 1243023056 its reverse (6503203421), we get a palindrome (7746226477).

The spelling of 1243023056 in words is "one billion, two hundred forty-three million, twenty-three thousand, fifty-six".