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442023 = 3147341
BaseRepresentation
bin1101011111010100111
3211110100020
41223322213
5103121043
613250223
73520461
oct1537247
9743306
10442023
1128210a
12193973
1312626a
14b7131
158ae83
hex6bea7

442023 has 4 divisors (see below), whose sum is σ = 589368. Its totient is φ = 294680.

The previous prime is 442019. The next prime is 442027. The reversal of 442023 is 320244.

It is a happy number.

442023 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (442019) and next prime (442027).

It is a cyclic number.

It is not a de Polignac number, because 442023 - 22 = 442019 is a prime.

It is a D-number.

442023 is strictly pandigital in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 441993 and 442011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73668 + ... + 73673.

It is an arithmetic number, because the mean of its divisors is an integer number (147342).

2442023 is an apocalyptic number.

442023 is a deficient number, since it is larger than the sum of its proper divisors (147345).

442023 is a wasteful number, since it uses less digits than its factorization.

442023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147344.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 442023 is about 664.8481029528. The cubic root of 442023 is about 76.1754372785.

Adding to 442023 its reverse (320244), we get a palindrome (762267).

The spelling of 442023 in words is "four hundred forty-two thousand, twenty-three", and thus it is an iban number.

Divisors: 1 3 147341 442023