Search a number
-
+
30442221241 = 41742493201
BaseRepresentation
bin11100010110011111…
…110110111010111001
32220120120102001212121
4130112133312322321
5444321202034431
621552430241241
72125246416415
oct342637667271
986516361777
1030442221241
1111a01927433
125a97056221
132b41b9a283
14168b07dd45
15bd287c611
hex7167f6eb9

30442221241 has 4 divisors (see below), whose sum is σ = 31184714484. Its totient is φ = 29699728000.

The previous prime is 30442221239. The next prime is 30442221253. The reversal of 30442221241 is 14212224403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14212224403 = 131093248031.

It can be written as a sum of positive squares in 2 ways, for example, as 6052840000 + 24389381241 = 77800^2 + 156171^2 .

It is a cyclic number.

It is not a de Polignac number, because 30442221241 - 21 = 30442221239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30442221541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371246560 + ... + 371246641.

It is an arithmetic number, because the mean of its divisors is an integer number (7796178621).

Almost surely, 230442221241 is an apocalyptic number.

It is an amenable number.

30442221241 is a deficient number, since it is larger than the sum of its proper divisors (742493243).

30442221241 is an equidigital number, since it uses as much as digits as its factorization.

30442221241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742493242.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 30442221241 its reverse (14212224403), we get a palindrome (44654445644).

The spelling of 30442221241 in words is "thirty billion, four hundred forty-two million, two hundred twenty-one thousand, two hundred forty-one".

Divisors: 1 41 742493201 30442221241