1243230143442 has 16 divisors (see below), whose sum is σ = 2841668899392. Its totient is φ = 355208612400.

The previous prime is 1243230143387. The next prime is 1243230143443. The reversal of 1243230143442 is 2443410323421.

It is not an unprimeable number, because it can be changed into a prime (1243230143443) 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, 14800358809 + ... + 14800358892.

It is an arithmetic number, because the mean of its divisors is an integer number (177604306212).

Almost surely, 2^{1243230143442} is an apocalyptic number.

1243230143442 is an abundant number, since it is smaller than the sum of its proper divisors (1598438755950).

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

1243230143442 is a wasteful number, since it uses less digits than its factorization.

1243230143442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29600717713.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 1243230143442 its reverse (2443410323421), we get a palindrome (3686640466863).

The spelling of 1243230143442 in words is "one trillion, two hundred forty-three billion, two hundred thirty million, one hundred forty-three thousand, four hundred forty-two".