442135506 has 32 divisors (see below), whose sum is σ = 898934400. Its totient is φ = 144953856.

The previous prime is 442135483. The next prime is 442135511. The reversal of 442135506 is 605531244.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94920 + ... + 99468.

It is an arithmetic number, because the mean of its divisors is an integer number (28091700).

Almost surely, 2^442135506 is an apocalyptic number.

442135506 is an abundant number, since it is smaller than the sum of its proper divisors (456798894).

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

442135506 is a wasteful number, since it uses less digits than its factorization.

442135506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 442135506 is about 21027.0184762367. The cubic root of 442135506 is about 761.8189958683.

The spelling of 442135506 in words is "four hundred forty-two million, one hundred thirty-five thousand, five hundred six".