442440420 has 48 divisors (see below), whose sum is σ = 1292699520. Its totient is φ = 112854016.

The previous prime is 442440409. The next prime is 442440421. The reversal of 442440420 is 24044244.

It is not an unprimeable number, because it can be changed into a prime (442440421) 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, 158925 + ... + 161684.

It is an arithmetic number, because the mean of its divisors is an integer number (26931240).

Almost surely, 2^442440420 is an apocalyptic number.

It is an amenable number.

442440420 is an abundant number, since it is smaller than the sum of its proper divisors (850259100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442440420 is a wasteful number, since it uses less digits than its factorization.

442440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320644 (or 320642 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 442440420 is about 21034.2677552607. The cubic root of 442440420 is about 761.9940823867.

Adding to 442440420 its reverse (24044244), we get a palindrome (466484664).

It can be divided in two parts, 4424 and 40420, that added together give a palindrome (44844).

The spelling of 442440420 in words is "four hundred forty-two million, four hundred forty thousand, four hundred twenty".