1243430240234 has 192 divisors, whose sum is σ = 2455841120256. Its totient is φ = 461345144832.

The previous prime is 1243430240231. The next prime is 1243430240263. The reversal of 1243430240234 is 4320420343421.

It is a super-2 number, since 2×1243430240234² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1243430240234.

It is not an unprimeable number, because it can be changed into a prime (1243430240231) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 937022879 + ... + 937024205.

It is an arithmetic number, because the mean of its divisors is an integer number (12790839168).

Almost surely, 2^{1243430240234} is an apocalyptic number.

1243430240234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1243430240234 is a deficient number, since it is larger than the sum of its proper divisors (1212410880022).

1243430240234 is a wasteful number, since it uses less digits than its factorization.

1243430240234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 1243430240234 its reverse (4320420343421), we get a palindrome (5563850583655).

The spelling of 1243430240234 in words is "one trillion, two hundred forty-three billion, four hundred thirty million, two hundred forty thousand, two hundred thirty-four".