442634505 has 8 divisors (see below), whose sum is σ = 708215232. Its totient is φ = 236071728.

The previous prime is 442634477. The next prime is 442634509. The reversal of 442634505 is 505436244.

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

It is not a de Polignac number, because 442634505 - 2¹⁹ = 442110217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442634509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14754469 + ... + 14754498.

It is an arithmetic number, because the mean of its divisors is an integer number (88526904).

Almost surely, 2^442634505 is an apocalyptic number.

It is an amenable number.

442634505 is a deficient number, since it is larger than the sum of its proper divisors (265580727).

442634505 is a wasteful number, since it uses less digits than its factorization.

442634505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29508975.

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 442634505 is about 21038.8807924756. The cubic root of 442634505 is about 762.1054872184.

The spelling of 442634505 in words is "four hundred forty-two million, six hundred thirty-four thousand, five hundred five".