1243387702280 has 32 divisors (see below), whose sum is σ = 2797700083200. Its totient is φ = 497341258176.

The previous prime is 1243387702273. The next prime is 1243387702283. The reversal of 1243387702280 is 822077833421.

It is a super-2 number, since 2×1243387702280² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243387702283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091609 + ... + 1917911.

It is an arithmetic number, because the mean of its divisors is an integer number (87428127600).

Almost surely, 2^{1243387702280} is an apocalyptic number.

1243387702280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243387702280 is an abundant number, since it is smaller than the sum of its proper divisors (1554312380920).

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

1243387702280 is a wasteful number, since it uses less digits than its factorization.

1243387702280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863933 (or 863929 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 1243387702280 in words is "one trillion, two hundred forty-three billion, three hundred eighty-seven million, seven hundred two thousand, two hundred eighty".