Base | Representation |
---|---|
bin | 1100000000000000001110 |
3 | 12220211010222 |
4 | 30000000032 |
5 | 1301130432 |
6 | 151231342 |
7 | 35511155 |
oct | 14000016 |
9 | 5824128 |
10 | 3145742 |
11 | 1859496 |
12 | 1078552 |
13 | 861ab2 |
14 | 5bc59c |
15 | 422112 |
hex | 30000e |
3145742 has 4 divisors (see below), whose sum is σ = 4718616. Its totient is φ = 1572870.
The previous prime is 3145741. The next prime is 3145771. The reversal of 3145742 is 2475413.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2475413 = 631 ⋅3923.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3145741) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786434 + ... + 786437.
It is an arithmetic number, because the mean of its divisors is an integer number (1179654).
Almost surely, 23145742 is an apocalyptic number.
3145742 is a deficient number, since it is larger than the sum of its proper divisors (1572874).
3145742 is a wasteful number, since it uses less digits than its factorization.
3145742 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1572873.
The product of its digits is 3360, while the sum is 26.
The square root of 3145742 is about 1773.6239736765. The cubic root of 3145742 is about 146.5236404130.
The spelling of 3145742 in words is "three million, one hundred forty-five thousand, seven hundred forty-two".
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