442424642 has 48 divisors (see below), whose sum is σ = 769680576. Its totient is φ = 190212000.

The previous prime is 442424581. The next prime is 442424659. The reversal of 442424642 is 246424244.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 442424599 and 442424608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 561773 + ... + 562559.

It is an arithmetic number, because the mean of its divisors is an integer number (16035012).

Almost surely, 2^442424642 is an apocalyptic number.

442424642 is a deficient number, since it is larger than the sum of its proper divisors (327255934).

442424642 is a wasteful number, since it uses less digits than its factorization.

442424642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 924 counting only the distinct ones).

The product of its digits is 49152, while the sum is 32.

The square root of 442424642 is about 21033.8926972636. The cubic root of 442424642 is about 761.9850243794.

Adding to 442424642 its reverse (246424244), we get a palindrome (688848886).

It can be divided in two parts, 44242 and 4642, that added together give a palindrome (48884).

The spelling of 442424642 in words is "four hundred forty-two million, four hundred twenty-four thousand, six hundred forty-two".