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442405 = 5233847
BaseRepresentation
bin1101100000000100101
3211110212101
41230000211
5103124110
613252101
73521545
oct1540045
9743771
10442405
11282427
12194031
131264a2
14b7325
158b13a
hex6c025

442405 has 8 divisors (see below), whose sum is σ = 554112. Its totient is φ = 338448.

The previous prime is 442399. The next prime is 442439. The reversal of 442405 is 504244.

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 442405 - 23 = 442397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1809 + ... + 2038.

It is an arithmetic number, because the mean of its divisors is an integer number (69264).

2442405 is an apocalyptic number.

It is an amenable number.

442405 is a deficient number, since it is larger than the sum of its proper divisors (111707).

442405 is a wasteful number, since it uses less digits than its factorization.

442405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 442405 is about 665.1353245769. The cubic root of 442405 is about 76.1973747784.

Adding to 442405 its reverse (504244), we get a palindrome (946649).

The spelling of 442405 in words is "four hundred forty-two thousand, four hundred five".

Divisors: 1 5 23 115 3847 19235 88481 442405