2143440342 has 48 divisors (see below), whose sum is σ = 4922491392. Its totient is φ = 671742720.

The previous prime is 2143440337. The next prime is 2143440361. The reversal of 2143440342 is 2430443412.

It is a happy number.

2143440342 is a `hidden beast` number, since 214 + 3 + 4 + 403 + 42 = 666.

It is a super-4 number, since 4×2143440342⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338667 + ... + 344937.

It is an arithmetic number, because the mean of its divisors is an integer number (102551904).

Almost surely, 2^2143440342 is an apocalyptic number.

2143440342 is an abundant number, since it is smaller than the sum of its proper divisors (2779051050).

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

2143440342 is a wasteful number, since it uses less digits than its factorization.

2143440342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7413 (or 7410 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 2143440342 is about 46297.3038307848. The cubic root of 2143440342 is about 1289.3489377346.

Adding to 2143440342 its reverse (2430443412), we get a palindrome (4573883754).

It can be divided in two parts, 21434 and 40342, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 2143440342 in words is "two billion, one hundred forty-three million, four hundred forty thousand, three hundred forty-two".