2143221342 has 16 divisors (see below), whose sum is σ = 4326504192. Its totient is φ = 707730200.

The previous prime is 2143221293. The next prime is 2143221343. The reversal of 2143221342 is 2431223412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143221343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1668534 + ... + 1669817.

It is an arithmetic number, because the mean of its divisors is an integer number (270406512).

Almost surely, 2^2143221342 is an apocalyptic number.

2143221342 is an abundant number, since it is smaller than the sum of its proper divisors (2183282850).

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

2143221342 is a wasteful number, since it uses less digits than its factorization.

2143221342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338463.

The product of its digits is 2304, while the sum is 24.

The square root of 2143221342 is about 46294.9386218407. The cubic root of 2143221342 is about 1289.3050243695.

Adding to 2143221342 its reverse (2431223412), we get a palindrome (4574444754).

The spelling of 2143221342 in words is "two billion, one hundred forty-three million, two hundred twenty-one thousand, three hundred forty-two".