42242004421 has 16 divisors (see below), whose sum is σ = 42837465600. Its totient is φ = 41651850240.

The previous prime is 42242004361. The next prime is 42242004433. The reversal of 42242004421 is 12440024224.

It is a cyclic number.

It is not a de Polignac number, because 42242004421 - 2⁷ = 42242004293 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 (42242004121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13464165 + ... + 13467301.

It is an arithmetic number, because the mean of its divisors is an integer number (2677341600).

Almost surely, 2^42242004421 is an apocalyptic number.

It is an amenable number.

42242004421 is a deficient number, since it is larger than the sum of its proper divisors (595461179).

42242004421 is a wasteful number, since it uses less digits than its factorization.

42242004421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3924.

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

Adding to 42242004421 its reverse (12440024224), we get a palindrome (54682028645).

The spelling of 42242004421 in words is "forty-two billion, two hundred forty-two million, four thousand, four hundred twenty-one".