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4192021 is a prime number
BaseRepresentation
bin1111111111011100010101
321212222101001
433333130111
52033121041
6225503301
750426431
oct17773425
97788331
104192021
112403589
1214a1b31
13b3a0b2
147b19c1
1557c131
hex3ff715

4192021 has 2 divisors, whose sum is σ = 4192022. Its totient is φ = 4192020.

The previous prime is 4192007. The next prime is 4192033. The reversal of 4192021 is 1202914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2656900 + 1535121 = 1630^2 + 1239^2 .

It is a cyclic number.

It is not a de Polignac number, because 4192021 - 27 = 4191893 is a prime.

4192021 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4192021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4192051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2096010 + 2096011.

It is an arithmetic number, because the mean of its divisors is an integer number (2096011).

Almost surely, 24192021 is an apocalyptic number.

It is an amenable number.

4192021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4192021 is an equidigital number, since it uses as much as digits as its factorization.

4192021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 4192021 is about 2047.4425510866. The cubic root of 4192021 is about 161.2406288246.

Adding to 4192021 its reverse (1202914), we get a palindrome (5394935).

The spelling of 4192021 in words is "four million, one hundred ninety-two thousand, twenty-one".