4202144321 has 4 divisors (see below), whose sum is σ = 4384846272. Its totient is φ = 4019442372.

The previous prime is 4202144263. The next prime is 4202144351. The reversal of 4202144321 is 1234412024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4202144321 - 2¹⁸ = 4201882177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 182701927 = 4202144321 / (4 + 2 + 0 + 2 + 1 + 4 + 4 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4202144351) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 91350941 + ... + 91350986.

It is an arithmetic number, because the mean of its divisors is an integer number (1096211568).

Almost surely, 2^4202144321 is an apocalyptic number.

It is an amenable number.

4202144321 is a deficient number, since it is larger than the sum of its proper divisors (182701951).

4202144321 is a wasteful number, since it uses less digits than its factorization.

4202144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182701950.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4202144321 is about 64823.9486686826. The cubic root of 4202144321 is about 1613.7031793822.

Adding to 4202144321 its reverse (1234412024), we get a palindrome (5436556345).

The spelling of 4202144321 in words is "four billion, two hundred two million, one hundred forty-four thousand, three hundred twenty-one".