4142344421 has 4 divisors (see below), whose sum is σ = 4172145600. Its totient is φ = 4112543244.

The previous prime is 4142344387. The next prime is 4142344429. The reversal of 4142344421 is 1244432414.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1244432414 = 2 ⋅622216207.

It is a cyclic number.

It is not a de Polignac number, because 4142344421 - 2¹⁰ = 4142343397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4142344429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14900381 + ... + 14900658.

It is an arithmetic number, because the mean of its divisors is an integer number (1043036400).

Almost surely, 2^4142344421 is an apocalyptic number.

It is an amenable number.

4142344421 is a deficient number, since it is larger than the sum of its proper divisors (29801179).

4142344421 is a wasteful number, since it uses less digits than its factorization.

4142344421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29801178.

The product of its digits is 12288, while the sum is 29.

The square root of 4142344421 is about 64361.0473889293. The cubic root of 4142344421 is about 1606.0118128427.

Adding to 4142344421 its reverse (1244432414), we get a palindrome (5386776835).

The spelling of 4142344421 in words is "four billion, one hundred forty-two million, three hundred forty-four thousand, four hundred twenty-one".