1243200133434 has 64 divisors (see below), whose sum is σ = 2912138772480. Its totient is φ = 346390058880.

The previous prime is 1243200133391. The next prime is 1243200133471. The reversal of 1243200133434 is 4343310023421.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3952047 + ... + 4255005.

It is an arithmetic number, because the mean of its divisors is an integer number (45502168320).

Almost surely, 2^{1243200133434} is an apocalyptic number.

1243200133434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243200133434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1456069386240).

1243200133434 is an abundant number, since it is smaller than the sum of its proper divisors (1668938639046).

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

1243200133434 is a wasteful number, since it uses less digits than its factorization.

1243200133434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305395.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 1243200133434 its reverse (4343310023421), we get a palindrome (5586510156855).

The spelling of 1243200133434 in words is "one trillion, two hundred forty-three billion, two hundred million, one hundred thirty-three thousand, four hundred thirty-four".