1243412442140 has 48 divisors (see below), whose sum is σ = 2848623863904. Its totient is φ = 452137440000.

The previous prime is 1243412442127. The next prime is 1243412442163. The reversal of 1243412442140 is 412442143421.

It is a junction number, because it is equal to n+sod(n) for n = 1243412442097 and 1243412442106.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12321890 + ... + 12422390.

It is an arithmetic number, because the mean of its divisors is an integer number (59346330498).

Almost surely, 2^{1243412442140} is an apocalyptic number.

1243412442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243412442140 is an abundant number, since it is smaller than the sum of its proper divisors (1605211421764).

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

1243412442140 is a wasteful number, since it uses less digits than its factorization.

1243412442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156758 (or 156756 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 1243412442140 its reverse (412442143421), we get a palindrome (1655854585561).

The spelling of 1243412442140 in words is "one trillion, two hundred forty-three billion, four hundred twelve million, four hundred forty-two thousand, one hundred forty".