4202140321 has 4 divisors (see below), whose sum is σ = 4220175492. Its totient is φ = 4184105152.

The previous prime is 4202140297. The next prime is 4202140333. The reversal of 4202140321 is 1230412024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 684345600 + 3517794721 = 26160^2 + 59311^2 .

It is a cyclic number.

It is not a de Polignac number, because 4202140321 - 2¹¹ = 4202138273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4202140381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9017236 + ... + 9017701.

It is an arithmetic number, because the mean of its divisors is an integer number (1055043873).

Almost surely, 2^4202140321 is an apocalyptic number.

It is an amenable number.

4202140321 is a deficient number, since it is larger than the sum of its proper divisors (18035171).

4202140321 is a wasteful number, since it uses less digits than its factorization.

4202140321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18035170.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4202140321 is about 64823.9178158803. The cubic root of 4202140321 is about 1613.7026673568.

Adding to 4202140321 its reverse (1230412024), we get a palindrome (5432552345).

The spelling of 4202140321 in words is "four billion, two hundred two million, one hundred forty thousand, three hundred twenty-one".