442034421 has 4 divisors (see below), whose sum is σ = 589379232. Its totient is φ = 294689612.

The previous prime is 442034419. The next prime is 442034429. The reversal of 442034421 is 124430244.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 442034421 - 2¹ = 442034419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442034391 and 442034400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442034429) 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, 73672401 + ... + 73672406.

It is an arithmetic number, because the mean of its divisors is an integer number (147344808).

Almost surely, 2^442034421 is an apocalyptic number.

It is an amenable number.

442034421 is a deficient number, since it is larger than the sum of its proper divisors (147344811).

442034421 is a wasteful number, since it uses less digits than its factorization.

442034421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147344810.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 442034421 is about 21024.6146456956. The cubic root of 442034421 is about 761.7609334706.

Adding to 442034421 its reverse (124430244), we get a palindrome (566464665).

The spelling of 442034421 in words is "four hundred forty-two million, thirty-four thousand, four hundred twenty-one".