442032021 has 12 divisors (see below), whose sum is σ = 646184448. Its totient is φ = 291137064.

The previous prime is 442032001. The next prime is 442032023. The reversal of 442032021 is 120230244.

It is not a de Polignac number, because 442032021 - 2⁶ = 442031957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442031985 and 442032003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442032023) 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 11 ways as a sum of consecutive naturals, for example, 295125 + ... + 296618.

It is an arithmetic number, because the mean of its divisors is an integer number (53848704).

Almost surely, 2^442032021 is an apocalyptic number.

It is an amenable number.

442032021 is a deficient number, since it is larger than the sum of its proper divisors (204152427).

442032021 is a wasteful number, since it uses less digits than its factorization.

442032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591832 (or 591829 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 442032021 is about 21024.5575696612. The cubic root of 442032021 is about 761.7595548227.

Adding to 442032021 its reverse (120230244), we get a palindrome (562262265).

The spelling of 442032021 in words is "four hundred forty-two million, thirty-two thousand, twenty-one".