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20042249 is a prime number
BaseRepresentation
bin100110001110…
…1001000001001
31101201020210112
41030131020021
520112322444
61553324105
7332233133
oct114351011
941636715
1020042249
111034a047
126866635
1341c9726
14293a053
151b5d69e
hex131d209

20042249 has 2 divisors, whose sum is σ = 20042250. Its totient is φ = 20042248.

The previous prime is 20042173. The next prime is 20042261. The reversal of 20042249 is 94224002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12924025 + 7118224 = 3595^2 + 2668^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042249 - 216 = 19976713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20042279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021124 + 10021125.

It is an arithmetic number, because the mean of its divisors is an integer number (10021125).

Almost surely, 220042249 is an apocalyptic number.

It is an amenable number.

20042249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042249 is an equidigital number, since it uses as much as digits as its factorization.

20042249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20042249 is about 4476.8570448474. The cubic root of 20042249 is about 271.6327629455.

The spelling of 20042249 in words is "twenty million, forty-two thousand, two hundred forty-nine".