4020221342 has 4 divisors (see below), whose sum is σ = 6030332016. Its totient is φ = 2010110670.

The previous prime is 4020221341. The next prime is 4020221369. The reversal of 4020221342 is 2431220204.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020221341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005055334 + ... + 1005055337.

It is an arithmetic number, because the mean of its divisors is an integer number (1507583004).

Almost surely, 2^4020221342 is an apocalyptic number.

4020221342 is a deficient number, since it is larger than the sum of its proper divisors (2010110674).

4020221342 is a wasteful number, since it uses less digits than its factorization.

4020221342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010110673.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4020221342 is about 63405.2154163993. The cubic root of 4020221342 is about 1590.0715052952.

Adding to 4020221342 its reverse (2431220204), we get a palindrome (6451441546).

The spelling of 4020221342 in words is "four billion, twenty million, two hundred twenty-one thousand, three hundred forty-two".