Search a number
-
+
1422409 is a prime number
BaseRepresentation
bin101011011010001001001
32200021011211
411123101021
5331004114
650253121
715042652
oct5332111
92607154
101422409
1189174a
125871a1
133aa581
14290529
151d16c4
hex15b449

1422409 has 2 divisors, whose sum is σ = 1422410. Its totient is φ = 1422408.

The previous prime is 1422367. The next prime is 1422419. The reversal of 1422409 is 9042241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 313600 = 1053^2 + 560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1422409 is a prime.

It is a Chen prime.

It is equal to p108652 and since 1422409 and 108652 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 1422409.

It is not a weakly prime, because it can be changed into another prime (1422419) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711204 + 711205.

It is an arithmetic number, because the mean of its divisors is an integer number (711205).

21422409 is an apocalyptic number.

It is an amenable number.

1422409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422409 is an equidigital number, since it uses as much as digits as its factorization.

1422409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1422409 is about 1192.6478943930. The cubic root of 1422409 is about 112.4626114439.

The spelling of 1422409 in words is "one million, four hundred twenty-two thousand, four hundred nine".