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20042323 = 72409027
BaseRepresentation
bin100110001110…
…1001001010011
31101201020220021
41030131021103
520112323243
61553324311
7332233300
oct114351123
941636807
1020042323
111034a104
126866697
1341c9782
14293a0a7
151b5d6ed
hex131d253

20042323 has 6 divisors (see below), whose sum is σ = 23314596. Its totient is φ = 17179092.

The previous prime is 20042299. The next prime is 20042327. The reversal of 20042323 is 32324002.

It is not a de Polignac number, because 20042323 - 29 = 20041811 is a prime.

It is a super-2 number, since 2×200423232 = 803389422472658, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 20042297 and 20042306.

It is not an unprimeable number, because it can be changed into a prime (20042327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204465 + ... + 204562.

It is an arithmetic number, because the mean of its divisors is an integer number (3885766).

Almost surely, 220042323 is an apocalyptic number.

20042323 is a deficient number, since it is larger than the sum of its proper divisors (3272273).

20042323 is an equidigital number, since it uses as much as digits as its factorization.

20042323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409041 (or 409034 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20042323 is about 4476.8653095665. The cubic root of 20042323 is about 271.6330972526.

Adding to 20042323 its reverse (32324002), we get a palindrome (52366325).

The spelling of 20042323 in words is "twenty million, forty-two thousand, three hundred twenty-three".

Divisors: 1 7 49 409027 2863189 20042323