442135445 has 8 divisors (see below), whose sum is σ = 531431736. Its totient is φ = 353128896.

The previous prime is 442135427. The next prime is 442135451. The reversal of 442135445 is 544531244.

It can be written as a sum of positive squares in 4 ways, for example, as 27646564 + 414488881 = 5258^2 + 20359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442135445 - 2¹⁰ = 442134421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69062 + ... + 75191.

It is an arithmetic number, because the mean of its divisors is an integer number (66428967).

Almost surely, 2^442135445 is an apocalyptic number.

It is an amenable number.

442135445 is a deficient number, since it is larger than the sum of its proper divisors (89296291).

442135445 is a wasteful number, since it uses less digits than its factorization.

442135445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144871.

The product of its digits is 38400, while the sum is 32.

The square root of 442135445 is about 21027.0170257219. The cubic root of 442135445 is about 761.8189608331.

Adding to 442135445 its reverse (544531244), we get a palindrome (986666689).

The spelling of 442135445 in words is "four hundred forty-two million, one hundred thirty-five thousand, four hundred forty-five".