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30420421241 = 731747718749
BaseRepresentation
bin11100010101001100…
…101100101001111001
32220112001101111220012
4130111030230221321
5444300111434431
621550331111305
72124563212520
oct342514545171
986461344805
1030420421241
11119a0597801
125a8b8a2535
132b3a506772
1416882074b7
15bd09c322b
hex71532ca79

30420421241 has 16 divisors (see below), whose sum is σ = 35894400000. Its totient is φ = 25228808640.

The previous prime is 30420421123. The next prime is 30420421243. The reversal of 30420421241 is 14212402403.

It is not a de Polignac number, because 30420421241 - 214 = 30420404857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30420421243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1613135 + ... + 1631883.

It is an arithmetic number, because the mean of its divisors is an integer number (2243400000).

Almost surely, 230420421241 is an apocalyptic number.

30420421241 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30420421241 is a deficient number, since it is larger than the sum of its proper divisors (5473978759).

30420421241 is a wasteful number, since it uses less digits than its factorization.

30420421241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26264.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 30420421241 its reverse (14212402403), we get a palindrome (44632823644).

The spelling of 30420421241 in words is "thirty billion, four hundred twenty million, four hundred twenty-one thousand, two hundred forty-one".

Divisors: 1 7 31 217 7477 18749 52339 131243 231787 581219 1622509 4068533 140186273 981303911 4345774463 30420421241