1243068780 has 24 divisors (see below), whose sum is σ = 3480592752. Its totient is φ = 331484992.

The previous prime is 1243068773. The next prime is 1243068793. The reversal of 1243068780 is 878603421.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 10358847 + ... + 10358966.

It is an arithmetic number, because the mean of its divisors is an integer number (145024698).

Almost surely, 2^1243068780 is an apocalyptic number.

1243068780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243068780 is an abundant number, since it is smaller than the sum of its proper divisors (2237523972).

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

1243068780 is a wasteful number, since it uses less digits than its factorization.

1243068780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20717825 (or 20717823 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1243068780 is about 35257.1805452450. The cubic root of 1243068780 is about 1075.2226054242. Note that the first 3 decimals are identical.

The spelling of 1243068780 in words is "one billion, two hundred forty-three million, sixty-eight thousand, seven hundred eighty".