4142424421 has 4 divisors (see below), whose sum is σ = 4142700652. Its totient is φ = 4142148192.

The previous prime is 4142424413. The next prime is 4142424443. The reversal of 4142424421 is 1244242414.

It is a happy number.

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 1704533796 + 2437890625 = 41286^2 + 49375^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142424421 - 2³ = 4142424413 is a prime.

It is a super-3 number, since 3×4142424421³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4142424421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4142424401) 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, 114246 + ... + 146071.

It is an arithmetic number, because the mean of its divisors is an integer number (1035675163).

Almost surely, 2^4142424421 is an apocalyptic number.

It is an amenable number.

4142424421 is a deficient number, since it is larger than the sum of its proper divisors (276231).

4142424421 is a wasteful number, since it uses less digits than its factorization.

4142424421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276230.

The product of its digits is 8192, while the sum is 28.

The square root of 4142424421 is about 64361.6688798543. The cubic root of 4142424421 is about 1606.0221516030.

Adding to 4142424421 its reverse (1244242414), we get a palindrome (5386666835).

The spelling of 4142424421 in words is "four billion, one hundred forty-two million, four hundred twenty-four thousand, four hundred twenty-one".