442400214 has 16 divisors (see below), whose sum is σ = 936847728. Its totient is φ = 138792192.

The previous prime is 442400213. The next prime is 442400227. The reversal of 442400214 is 412004244.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442400213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2168527 + ... + 2168730.

It is an arithmetic number, because the mean of its divisors is an integer number (58552983).

Almost surely, 2^442400214 is an apocalyptic number.

442400214 is an abundant number, since it is smaller than the sum of its proper divisors (494447514).

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

442400214 is a wasteful number, since it uses less digits than its factorization.

442400214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4337279.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 442400214 is about 21033.3120073849. The cubic root of 442400214 is about 761.9710000606.

Adding to 442400214 its reverse (412004244), we get a palindrome (854404458).

The spelling of 442400214 in words is "four hundred forty-two million, four hundred thousand, two hundred fourteen".