442121342 has 16 divisors (see below), whose sum is σ = 724858512. Its totient is φ = 201009600.

The previous prime is 442121333. The next prime is 442121357. The reversal of 442121342 is 243121244.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 125159 + ... + 128642.

It is an arithmetic number, because the mean of its divisors is an integer number (45303657).

Almost surely, 2^442121342 is an apocalyptic number.

442121342 is a deficient number, since it is larger than the sum of its proper divisors (282737170).

442121342 is a wasteful number, since it uses less digits than its factorization.

442121342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253883.

The product of its digits is 1536, while the sum is 23.

The square root of 442121342 is about 21026.6816687750. The cubic root of 442121342 is about 761.8108607157.

Adding to 442121342 its reverse (243121244), we get a palindrome (685242586).

It can be divided in two parts, 44212 and 1342, that added together give a palindrome (45554).

The spelling of 442121342 in words is "four hundred forty-two million, one hundred twenty-one thousand, three hundred forty-two".