143640242000 has 320 divisors, whose sum is σ = 376298058240. Its totient is φ = 52835328000.

The previous prime is 143640241991. The next prime is 143640242021. The reversal of 143640242000 is 242046341.

It is a Cunningham number, because it is equal to 378999²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 378997811 + ... + 378998189.

It is an arithmetic number, because the mean of its divisors is an integer number (1175931432).

Almost surely, 2^143640242000 is an apocalyptic number.

143640242000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143640242000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188149029120).

143640242000 is an abundant number, since it is smaller than the sum of its proper divisors (232657816240).

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

143640242000 is a wasteful number, since it uses less digits than its factorization.

143640242000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 143640242000 its reverse (242046341), we get a palindrome (143882288341).

The spelling of 143640242000 in words is "one hundred forty-three billion, six hundred forty million, two hundred forty-two thousand".