4202424421 has 4 divisors (see below), whose sum is σ = 4525687852. Its totient is φ = 3879160992.

The previous prime is 4202424419. The next prime is 4202424433. The reversal of 4202424421 is 1244242024.

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 1065304321 + 3137120100 = 32639^2 + 56010^2 .

It is a cyclic number.

It is not a de Polignac number, because 4202424421 - 2¹ = 4202424419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4202424491) 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, 161631696 + ... + 161631721.

It is an arithmetic number, because the mean of its divisors is an integer number (1131421963).

Almost surely, 2^4202424421 is an apocalyptic number.

It is an amenable number.

4202424421 is a deficient number, since it is larger than the sum of its proper divisors (323263431).

4202424421 is a wasteful number, since it uses less digits than its factorization.

4202424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323263430.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 4202424421 is about 64826.1090996521. The cubic root of 4202424421 is about 1613.7390331578.

Adding to 4202424421 its reverse (1244242024), we get a palindrome (5446666445).

The spelling of 4202424421 in words is "four billion, two hundred two million, four hundred twenty-four thousand, four hundred twenty-one".