12143531442 has 16 divisors (see below), whose sum is σ = 27756643392. Its totient is φ = 3469580400.

The previous prime is 12143531437. The next prime is 12143531447. The reversal of 12143531442 is 24413534121.

It is an interprime number because it is at equal distance from previous prime (12143531437) and next prime (12143531447).

It is not an unprimeable number, because it can be changed into a prime (12143531447) 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, 144565809 + ... + 144565892.

It is an arithmetic number, because the mean of its divisors is an integer number (1734790212).

Almost surely, 2^12143531442 is an apocalyptic number.

12143531442 is an abundant number, since it is smaller than the sum of its proper divisors (15613111950).

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

12143531442 is a wasteful number, since it uses less digits than its factorization.

12143531442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289131713.

The product of its digits is 11520, while the sum is 30.

The spelling of 12143531442 in words is "twelve billion, one hundred forty-three million, five hundred thirty-one thousand, four hundred forty-two".