442440102 has 32 divisors (see below), whose sum is σ = 976197600. Its totient is φ = 132814080.

The previous prime is 442440071. The next prime is 442440109. The reversal of 442440102 is 201044244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442440109) 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, 65977 + ... + 72372.

It is an arithmetic number, because the mean of its divisors is an integer number (30506175).

Almost surely, 2^442440102 is an apocalyptic number.

442440102 is an abundant number, since it is smaller than the sum of its proper divisors (533757498).

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

442440102 is a wasteful number, since it uses less digits than its factorization.

442440102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138408.

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

The square root of 442440102 is about 21034.2601961657. The cubic root of 442440102 is about 761.9938998279.

Adding to 442440102 its reverse (201044244), we get a palindrome (643484346).

The spelling of 442440102 in words is "four hundred forty-two million, four hundred forty thousand, one hundred two".