2123440143242 has 8 divisors (see below), whose sum is σ = 3474720234432. Its totient is φ = 965200065100.

The previous prime is 2123440143233. The next prime is 2123440143271. The reversal of 2123440143242 is 2423410443212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2123440143199 and 2123440143208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48260003234 + ... + 48260003277.

It is an arithmetic number, because the mean of its divisors is an integer number (434340029304).

Almost surely, 2^{2123440143242} is an apocalyptic number.

2123440143242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2123440143242 is a deficient number, since it is larger than the sum of its proper divisors (1351280091190).

2123440143242 is a wasteful number, since it uses less digits than its factorization.

2123440143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96520006524.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 2123440143242 its reverse (2423410443212), we get a palindrome (4546850586454).

The spelling of 2123440143242 in words is "two trillion, one hundred twenty-three billion, four hundred forty million, one hundred forty-three thousand, two hundred forty-two".