442134342 has 128 divisors (see below), whose sum is σ = 1101112320. Its totient is φ = 130636800.

The previous prime is 442134331. The next prime is 442134367. The reversal of 442134342 is 243431244.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2927967 + ... + 2928117.

It is an arithmetic number, because the mean of its divisors is an integer number (8602440).

Almost surely, 2^442134342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442134342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550556160).

442134342 is an abundant number, since it is smaller than the sum of its proper divisors (658977978).

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

442134342 is a wasteful number, since it uses less digits than its factorization.

442134342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 309 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 442134342 is about 21026.9907975440. The cubic root of 442134342 is about 761.8183273266.

Adding to 442134342 its reverse (243431244), we get a palindrome (685565586).

The spelling of 442134342 in words is "four hundred forty-two million, one hundred thirty-four thousand, three hundred forty-two".