2143404342 has 32 divisors (see below), whose sum is σ = 4821934560. Its totient is φ = 714466656.

The previous prime is 2143404337. The next prime is 2143404371. The reversal of 2143404342 is 2434043412.

It is a happy number.

2143404342 is a `hidden beast` number, since 214 + 3 + 404 + 3 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240643 + ... + 249390.

It is an arithmetic number, because the mean of its divisors is an integer number (150685455).

Almost surely, 2^2143404342 is an apocalyptic number.

2143404342 is an abundant number, since it is smaller than the sum of its proper divisors (2678530218).

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

2143404342 is an frugal number, since it uses more digits than its factorization.

2143404342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490056 (or 490038 counting only the distinct ones).

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

The square root of 2143404342 is about 46296.9150376135. The cubic root of 2143404342 is about 1289.3417193047.

Adding to 2143404342 its reverse (2434043412), we get a palindrome (4577447754).

The spelling of 2143404342 in words is "two billion, one hundred forty-three million, four hundred four thousand, three hundred forty-two".