142144143240 has 128 divisors (see below), whose sum is σ = 466019049600. Its totient is φ = 34398443520.

The previous prime is 142144143227. The next prime is 142144143257. The reversal of 142144143240 is 42341441241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 142144143198 and 142144143207.

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, 656454 + ... + 845706.

It is an arithmetic number, because the mean of its divisors is an integer number (3640773825).

Almost surely, 2^142144143240 is an apocalyptic number.

142144143240 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 142144143240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233009524800).

142144143240 is an abundant number, since it is smaller than the sum of its proper divisors (323874906360).

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

142144143240 is a wasteful number, since it uses less digits than its factorization.

142144143240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189847 (or 189843 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 142144143240 its reverse (42341441241), we get a palindrome (184485584481).

The spelling of 142144143240 in words is "one hundred forty-two billion, one hundred forty-four million, one hundred forty-three thousand, two hundred forty".