442147605 has 8 divisors (see below), whose sum is σ = 707436192. Its totient is φ = 235812048.

The previous prime is 442147603. The next prime is 442147609. The reversal of 442147605 is 506741244.

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

It is not a de Polignac number, because 442147605 - 2¹ = 442147603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442147603) 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, 14738239 + ... + 14738268.

It is an arithmetic number, because the mean of its divisors is an integer number (88429524).

Almost surely, 2^442147605 is an apocalyptic number.

It is an amenable number.

442147605 is a deficient number, since it is larger than the sum of its proper divisors (265288587).

442147605 is a wasteful number, since it uses less digits than its factorization.

442147605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29476515.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 442147605 is about 21027.3061755423. The cubic root of 442147605 is about 761.8259448420.

Adding to 442147605 its reverse (506741244), we get a palindrome (948888849).

The spelling of 442147605 in words is "four hundred forty-two million, one hundred forty-seven thousand, six hundred five".