442378535 has 4 divisors (see below), whose sum is σ = 530854248. Its totient is φ = 353902824.

The previous prime is 442378513. The next prime is 442378579. The reversal of 442378535 is 535873244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442378535 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442378492 and 442378501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44237849 + ... + 44237858.

It is an arithmetic number, because the mean of its divisors is an integer number (132713562).

Almost surely, 2^442378535 is an apocalyptic number.

442378535 is a deficient number, since it is larger than the sum of its proper divisors (88475713).

442378535 is an equidigital number, since it uses as much as digits as its factorization.

442378535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88475712.

The product of its digits is 403200, while the sum is 41.

The square root of 442378535 is about 21032.7966518958. The cubic root of 442378535 is about 761.9585535332.

The spelling of 442378535 in words is "four hundred forty-two million, three hundred seventy-eight thousand, five hundred thirty-five".