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442111 = 1923269
BaseRepresentation
bin1101011111011111111
3211110110111
41223323333
5103121421
613250451
73520645
oct1537377
9743414
10442111
1128218a
12193a27
13126307
14b7195
158aee1
hex6beff

442111 has 4 divisors (see below), whose sum is σ = 465400. Its totient is φ = 418824.

The previous prime is 442109. The next prime is 442121. The reversal of 442111 is 111244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442111 - 21 = 442109 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 442091 and 442100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11616 + ... + 11653.

It is an arithmetic number, because the mean of its divisors is an integer number (116350).

2442111 is an apocalyptic number.

442111 is a deficient number, since it is larger than the sum of its proper divisors (23289).

442111 is a wasteful number, since it uses less digits than its factorization.

442111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23288.

The product of its digits is 32, while the sum is 13.

The square root of 442111 is about 664.9142801896. The cubic root of 442111 is about 76.1804920635.

Adding to 442111 its reverse (111244), we get a palindrome (553355).

The spelling of 442111 in words is "four hundred forty-two thousand, one hundred eleven", and thus it is an iban number.

Divisors: 1 19 23269 442111