Base | Representation |
---|---|
bin | 101010010111010… |
… | …1011000011111000 |
3 | 10200001211202102021 |
4 | 1110232223003320 |
5 | 10402402134034 |
6 | 353020044224 |
7 | 50140505341 |
oct | 12456530370 |
9 | 3601752367 |
10 | 1421521144 |
11 | 66a45896a |
12 | 338093674 |
13 | 198675394 |
14 | d6b150c8 |
15 | 84be66b4 |
hex | 54bab0f8 |
1421521144 has 32 divisors (see below), whose sum is σ = 2683044000. Its totient is φ = 706060672.
The previous prime is 1421521139. The next prime is 1421521177. The reversal of 1421521144 is 4411251241.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911037 + ... + 912595.
It is an arithmetic number, because the mean of its divisors is an integer number (83845125).
Almost surely, 21421521144 is an apocalyptic number.
It is an amenable number.
1421521144 is a deficient number, since it is larger than the sum of its proper divisors (1261522856).
1421521144 is a wasteful number, since it uses less digits than its factorization.
1421521144 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2247 (or 2243 counting only the distinct ones).
The product of its digits is 1280, while the sum is 25.
The square root of 1421521144 is about 37703.0654456637. The cubic root of 1421521144 is about 1124.3920716122.
Adding to 1421521144 its reverse (4411251241), we get a palindrome (5832772385).
The spelling of 1421521144 in words is "one billion, four hundred twenty-one million, five hundred twenty-one thousand, one hundred forty-four".
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