Base | Representation |
---|---|
bin | 100111001001101010… |
… | …011000111110010101 |
3 | 11000111200222121121222 |
4 | 213021222120332111 |
5 | 1142043214212141 |
6 | 31151221020125 |
7 | 3015512300531 |
oct | 471152307625 |
9 | 130450877558 |
10 | 42038038421 |
11 | 16912416515 |
12 | 8192554645 |
13 | 3c6c387662 |
14 | 206b128bc1 |
15 | 11608b014b |
hex | 9c9a98f95 |
42038038421 has 2 divisors, whose sum is σ = 42038038422. Its totient is φ = 42038038420.
The previous prime is 42038038391. The next prime is 42038038433. The reversal of 42038038421 is 12483083024.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 37027380625 + 5010657796 = 192425^2 + 70786^2 .
It is a cyclic number.
It is not a de Polignac number, because 42038038421 - 210 = 42038037397 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (42038038321) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21019019210 + 21019019211.
It is an arithmetic number, because the mean of its divisors is an integer number (21019019211).
Almost surely, 242038038421 is an apocalyptic number.
It is an amenable number.
42038038421 is a deficient number, since it is larger than the sum of its proper divisors (1).
42038038421 is an equidigital number, since it uses as much as digits as its factorization.
42038038421 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 36864, while the sum is 35.
The spelling of 42038038421 in words is "forty-two billion, thirty-eight million, thirty-eight thousand, four hundred twenty-one".
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