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2422421 is a prime number
BaseRepresentation
bin1001001111011010010101
311120001221022
421033122111
51110004141
6123530525
726406311
oct11173225
94501838
102422421
111405001
12989a45
1366a7b1
14470b41
1532cb4b
hex24f695

2422421 has 2 divisors, whose sum is σ = 2422422. Its totient is φ = 2422420.

The previous prime is 2422411. The next prime is 2422423. The reversal of 2422421 is 1242242.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1234321 + 1188100 = 1111^2 + 1090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2422421 is a prime.

It is a Sophie Germain prime.

Together with 2422423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2422421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2422423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211210 + 1211211.

It is an arithmetic number, because the mean of its divisors is an integer number (1211211).

22422421 is an apocalyptic number.

It is an amenable number.

2422421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2422421 is an equidigital number, since it uses as much as digits as its factorization.

2422421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256, while the sum is 17.

The square root of 2422421 is about 1556.4128629641. The cubic root of 2422421 is about 134.3022249526.

Adding to 2422421 its reverse (1242242), we get a palindrome (3664663).

The spelling of 2422421 in words is "two million, four hundred twenty-two thousand, four hundred twenty-one".